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Search for new physics in final states with two opposite-sign, same-flavor leptons, jets, and missing transverse momentum in pp collisions at √s = 13 TeV

Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,Cuevas Maestro, Francisco Javier,Fernández Menéndez, Javier,González Caballero, Isidro,González Fernández, Juan Rodrigo,Palencia Cortezón, José Enrique,Sánchez Cruz, Sergio,Suárez Andrés, Ignacio,Vizán García, · 2016

Abstract

Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Erö, J., Flechl, M., Friedl, M., Frühwirth, R., Ghete, V.M., Hartl, C., Hörmann, N., Hrubec, J., Jeitler, M., König, A., Krätschmer, I., Liko, D., Matsushita, T., Mikulec, I., Rabady, D., Rad, N., Rahbaran, B., Rohringer, H., Schieck, J., Strauss, J., Treberer-Treberspurg, W., Waltenberger, W., Wulz, C.-E., Mossolov, V., Shumeiko, N., Suarez Gonzalez, J., Alderweireldt, S., De Wolf, E.A., Janssen, X., Lauwers, J., Van De Klundert, M., Van Haevermaet, H., Van Mechelen, P., Van Remortel, N., Van Spilbeeck, A., Abu Zeid, S., Blekman, F., D’Hondt, J., Daci, N., De Bruyn, I., Deroover, K., Heracleous, N., Lowette, S., Moortgat, S., Moreels, L., Olbrechts, A., Python, Q., Tavernier, S., Van Doninck, W., Van Mulders, P., Van Parijs, I., Brun, H., Caillol, C., Clerbaux, B., De Lentdecker, G., Delannoy, H., Fasanella, G., Favart, L., Goldouzian, R., Grebenyuk, A., Karapostoli, G., Lenzi, T., Léonard, A., Luetic, J., Maerschalk, T., Marinov, A., Randle-conde, A., Seva, T., Vander Velde, C., Vanlaer, P., Yonamine, R., Zenoni, F., Zhang, F., Cimmino, A., Cornelis, T., Dobur, D., Fagot, A., Garcia, G., Gul, M., Poyraz, D., Salva, S., Schöfbeck, R., Tytgat, M., Van Driessche, W., Yazgan, E., Zaganidis, N., Bakhshiansohi, H., Beluffi, C., Bondu, O., Brochet, S., Bruno, G., Caudron, A., Ceard, L., De Visscher, S., Delaere, C., Delcourt, M., Forthomme, L., Francois, B., Giammanco, A., Jafari, A., Jez, P., Komm, M., Lemaitre, V., Magitteri, A., Mertens, A., Musich, M., Nuttens, C., Piotrzkowski, K., Quertenmont, L., Selvaggi, M., Vidal Marono, M., Wertz, S., Beliy, N., Aldá Júnior, W.L., Alves, F.L., Alves, G.A., Brito, L., Hensel, C., Moraes, A., Pol, M.E., Rebello Teles, P., Belchior Batista Das Chagas, E., Carvalho, W., Chinellato, J., Custódio, A., Da Costa, E.M., Da Silveira, G.G., De Jesus Damiao, D., De Oliveira Martins, C., Fonseca De Souza, S., Huertas Guativa, L.M., Malbouisson, H., Matos Figueiredo, D., Mora Herrera, C., Mundim, L., Nogima, H., Prado Da Silva, W.L., Santoro, A., Sznajder, A., Tonelli Manganote, E.J., Vilela Pereira, A., Ahuja, S., Bernardes, C.A., Dogra, S., Fernandez Perez Tomei, T.R., Gregores, E.M., Mercadante, P.G., Moon, C.S., Novaes, S.F., Padula, S.S., Romero Abad, D., Ruiz Vargas, J.C., Aleksandrov, A., Hadjiiska, R., Iaydjiev, P., Rodozov, M., Stoykova, S., Sultanov, G., Vutova, M., Dimitrov, A., Glushkov, I., Litov, L., Pavlov, B., Petkov, P., Fang, W., Ahmad, M., Bian, J.G., Chen, G.M., Chen, H.S., Chen, M., Chen, Y., Cheng, T., Jiang, C.H., Leggat, D., Liu, Z., Romeo, F., Shaheen, S.M., Spiezia, A., Tao, J., Wang, C., Wang, Z., Zhang, H., Zhao, J., Ban, Y., Li, Q., Liu, S., Mao, Y., Qian, S.J., Wang, D., Xu, Z., Avila, C., Cabrera, A., Chaparro Sierra, L.F., Florez, C., Gomez, J.P., González Hernández, C.F., Ruiz Alvarez, J.D., Sanabria, J.C., Godinovic, N., Lelas, D., Puljak, I., Ribeiro Cipriano, P.M., Antunovic, Z., Kovac, M., Brigljevic, V., Ferencek, D., Kadija, K., Micanovic, S., Sudic, L., Attikis, A., Mavromanolakis, G., Mousa, J., Nicolaou, C., Ptochos, F., Razis, P.A., Rykaczewski, H., Finger, M., Finger, M., Jr., Carrera Jarrin, E., Assran, Y., Elkafrawy, T., Ellithi Kamel, A., Mahrous, A., Calpas, B., Kadastik, M., Murumaa, M., Perrini, L., Raidal, M., Tiko, A., Veelken, C., Eerola, P., Pekkanen, J., Voutilainen, M., Härkönen, J., Karimäki, V., Kinnunen, R., Lampén, T., Lassila-Perini, K., Lehti, S., Lindén, T., Luukka, P., Peltola, T., Tuominiemi, J., Tuovinen, E., Wendland, L., Talvitie, J., Tuuva, T., Besancon, M., Couderc, F., Dejardin, M., Denegri, D., Fabbro, B., Faure, J.L., Favaro, C., Ferri, F., Ganjour, S., Ghosh, S., Givernaud, A., Gras, P., Hamel de Monchenault, G., Jarry, P., Kucher, I., Locci, E., Machet, M., Malcles, J., Rander, J., Rosowsky, A., Titov, M., Zghiche, A., Abdulsalam, A., Antropov, I., Baffioni, S., Beaudette, F., Busson, P., Cadamuro, L., Chapon, E., Charlot, C., Davignon, O., Granier de Cassagnac, R., Jo, M., Lisniak, S., Miné, P., Naranjo, I.N., Nguyen, M., Ochando, C., Ortona, G., Paganini, P., Pigard, P., Regnard, S., Salerno, R., Sirois, Y., Strebler, T., Yilmaz, Y., Zabi, A., Agram, J.-L., Andrea, J., Aubin, A., Bloch, D., Brom, J.-M., Buttignol, M., Chabert, E.C., Chanon, N., Collard, C., Conte, E., Coubez, X., Fontaine, J.-C., Gelé, D., Goerlach, U., Le Bihan, A.-C., Merlin, J.A., Skovpen, K., Van Hove, P., Gadrat, S., Beauceron, S., Bernet, C., Boudoul, G., Bouvier, E., Carrillo Montoya, C.A., Chierici, R., Contardo, D., Courbon, B., Depasse, P., El Mamouni, H., Fan, J., Fay, J., Gascon, S., Gouzevitch, M., Grenier, G., Ille, B., Lagarde, F., Laktineh, I.B., Lethuillier, M., Mirabito, L., Pequegnot, A.L., Perries, S., Popov, A., Sabes, D., Sordini, V., Vander Donckt, M., Verdier, P., Viret, S., Toriashvili, T., Tsamalaidze, Z., Autermann, C., Beranek, S., Feld, L., Heister, A., Kiesel, M.K., Klein, K., Lipinski, M., Ostapchuk, A., Preuten, M., Raupach, F., Schael, S., Schomakers, C., Schulte, J.F., Schulz, J., Verlage, T., Weber, H., Zhukov, V., Brodski, M., Dietz-Laursonn, E., Duchardt, D., Endres, M., Erdmann, M., Erdweg, S., Esch, T., Fischer, R., Güth, A., Hebbeker, T., Heidemann, C., Hoepfner, K., Knutzen, S., Merschmeyer, M., Meyer, A., Millet, P., Mukherjee, S., Olschewski, M., Padeken, K., Papacz, P., Pook, T., Radziej, M., Reithler, H., Rieger, M., Scheuch, F., Sonnenschein, L., Teyssier, D., Thüer, S., Cherepanov, V., Erdogan, Y., Flügge, G., Haj Ahmad, W., Hoehle, F., Kargoll, B., Kress, T., Künsken, A., Lingemann, J., Nehrkorn, A., Nowack, A., Nugent, I.M., Pistone, C., Pooth, O., Stahl, A., Aldaya Martin, M., Asawatangtrakuldee, C., Asin, I., Beernaert, K., Behnke, O., Behrens, U., Bin Anuar, A.A., Borras, K., Campbell, A., Connor, P., Contreras-Campana, C., Costanza, F., Diez Pardos, C., Dolinska, G., Eckerlin, G., Eckstein, D., Gallo, E., Garay Garcia, J., Geiser, A., Gizhko, A., Grados Luyando, J.M., Gunnellini, P., Harb, A., Hauk, J., Hempel, M., Jung, H., Kalogeropoulos, A., Karacheban, O., Kasemann, M., Keaveney, J., Kieseler, J., Kleinwort, C., Korol, I., Lange, W., Lelek, A., Leonard, J., Lipka, K., Lobanov, A., Lohmann, W., Mankel, R., Melzer-Pellmann, I.-A., Meyer, A.B., Mittag, G., Mnich, J., Mussgiller, A., Ntomari, E., Pitzl, D., Placakyte, R., Raspereza, A., Roland, B., Sahin, M.Ö., Saxena, P., Schoerner-Sadenius, T., Seitz, C., Spannagel, S., Stefaniuk, N., Trippkewitz, K.D., Van Onsem, G.P., Walsh, R., Wissing, C., Blobel, V., Centis Vignali, M., Draeger, A.R., Dreyer, T., Garutti, E., Goebel, K., Gonzalez, D., Haller, J., Hoffmann, M., Junkes, A., Klanner, R., Kogler, R., Kovalchuk, N., Lapsien, T., Lenz, T., Marchesini, I., Marconi, D., Meyer, M., Niedziela, M., Nowatschin, D., Ott, J., Pantaleo, F., Peiffer, T., Perieanu, A., Poehlsen, J., Sander, C., Scharf, C., Schleper, P., Schmidt, A., Schumann, S., Schwandt, J., 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Read accessible full text

Search for new physics in final states with two opposite-sign, same-flavor leptons, jets, and missing transverse momentum in pp collisions at √s = 13 TeV

Author: Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,Cuevas Maestro, Francisco Javier,Fernández Menéndez, Javier,González Caballero, Isidro,González Fernández, Juan Rodrigo,Palencia Cortezón, José Enrique,Sánchez Cruz, Sergio,Suárez Andrés, Ignacio,Vizán García,
Publisher: Universidad de Oviedo
Year: 2016
DOI: 10.1007/JHEP12(2016)013
Source: https://digibuo.uniovi.es/dspace/bitstream/10651/40908/1/JHEP_VK2016%2815%29.pdf
JHEP12(2016)013
Published o SISSA by Sp inge
Recei ed:July 4, 2016
Re ised:Oc obe 17, 2016
Accep ed:No embe 20, 2016
Published:Decembe 5, 2016
Sea ch o new physics in inal s a es wi h wo
opposi e-sign, same- la o lep ons, je s, and missing
ans e se momen um in pp collisions a √s= 13 TeV
The CMS collabo a ion
E-mail: [email p o ec ed]
Abs ac : A sea ch is p esen ed o physics beyond he s anda d model in inal s a es
wi h wo opposi e-sign, same- la o lep ons, je s, and missing ans e se momen um. The
da a sample co esponds o an in eg a ed luminosi y o 2.3 b−1o p o on-p o on collisions
a √s= 13 TeV collec ed wi h he CMS de ec o a he LHC in 2015. The analysis uses he
in a ian mass o he lep on pai , sea ching o a kinema ic edge o a esonan -like excess
compa ible wi h he Z boson mass. Bo h sea ch modes use se e al e en ca ego ies in o de
o inc ease he sensi i i y o new physics. These ca ego ies a e based on he apidi y o he
lep ons, he mul iplici y o je s and b je s, he scala sum o je ans e se momen a, and
missing ans e se momen um. The obse a ions in all signal egions a e consis en wi h
he expec a ions om he s anda d model, and he esul s a e in e p e ed in he con ex
o simpli ied models o supe symme y.
Keywo ds: Beyond S anda d Model, Had on-Had on sca e ing (expe imen s),
Supe symme y
A Xi eP in : 1607.00915
Open Access, Copy igh CERN,
o he bene i o he CMS Collabo a ion.
A icle unded by SCOAP3.
doi:10.1007/JHEP12(2016)013
JHEP12(2016)013
Con en s
1 In oduc ion 1
2 The CMS de ec o 2
3 Da ase s, igge s, and objec selec ion 2
4 Signal models 4
5 Signal egions 5
5.1 On-Z signal egions 5
5.2 Edge sea ch signal egions 5
6 S anda d model backg ound p edic ions 6
6.1 Fla o -symme ic backg ounds 6
6.2 D ell-Yan-like backg ounds 7
6.2.1 O he s anda d model p ocesses wi h a Z boson 9
6.2.2 D ell-Yan backg ound in he edge sea ch 9
7 Resul s 10
8 In e p e a ion 14
8.1 Sys ema ic unce ain y in he signal yield 14
8.2 In e p e a ion using simpli ied models 14
9 Summa y 16
The CMS collabo a ion 21
1 In oduc ion
Supe symme y (SUSY) [1–8] is one o he mos appealing ex ensions o he s anda d
model (SM), assuming a new undamen al symme y ha assigns a new e mion (boson)
o e e y SM boson ( e mion). SUSY esol es he hie a chy p oblem o he SM by s abilizing
he Higgs boson mass ia addi ional quan um loop co ec ions om he op supe -pa ne
( op squa k), which compensa e he co ec ion due o he op qua k. I R-pa i y [9] is
conse ed he ligh es s a e p edic ed by he heo y is s able and po en ially massi e,
p o iding a candida e o Da k Ma e . Many SUSY models also lead o he uni ica ion o
he elec oweak and s ong o ces a high ene gies.
This pape p esen s a sea ch o signa u es o SUSY in e en s wi h wo opposi e-
sign, same- la o lep ons (elec ons o muons), je s, and missing ans e se momen um. A
– 1 –
JHEP12(2016)013
da ase o pp collisions collec ed wi h he CMS de ec o a he CERN LHC a a cen e -o -
mass ene gy √s= 13 TeV in 2015 was used, co esponding o an in eg a ed luminosi y o
2.3 b−1. The dilep on opology is expec ed o occu in SUSY models whe e a neu alino
decays o ei he an on-shell Z boson o a i ual Z/γ boson which in u n decays o lep ons
and he ligh es SUSY pa icle (LSP), o in o a lep on and i s supe symme ic pa ne
(slep on), he la e decaying in o ano he lep on and he LSP. Decays in ol ing an on-
shell Z boson a e expec ed o p oduce an excess o e en s compa ible wi h he Z boson
mass, while decays in ol ing o -shell Z bosons o slep ons a e expec ed o p oduce a
cha ac e is ic edge shape in he in a ian mass dis ibu ion o he dilep on sys em [10].
The CMS Collabo a ion published a e sion o his analysis using a √s= 8 TeV
da ase , obse ing a 2.6σlocal signi icance excess compa ible wi h an edge shape loca ed
a a dilep on in a ian mass o 78.7±1.4 GeV [11]. The ATLAS collabo a ion epo ed
he absence o any excess in a simila signal egion, bu obse ed a 3.0σexcess in dilep on
e en s compa ible wi h he Z boson mass [12]. Bo h o hese excesses wa an sc u iny
using he 13 TeV da ase and a e analyzed he e wi h mino changes wi h espec o he
8 TeV sea ches.
2 The CMS de ec o
The cen al ea u e o he CMS appa a us is a supe conduc ing solenoid, 13 m in leng h
and 6 m in diame e , ha p o ides an axial magne ic ield o 3.8 T. The bo e o he solenoid
is ou i ed wi h a ious pa icle de ec ion sys ems. Cha ged-pa icle ajec o ies a e mea-
su ed by silicon pixel and s ip acke s, co e ing 0 <φ<2πin azimu h and |η|<2.5,
whe e he pseudo apidi y ηis de ined as η=−log[ an(θ/2)], wi h θbeing he pola angle o
he ajec o y o he pa icle wi h espec o he beam di ec ion. A c ys al elec omagne ic
calo ime e (ECAL), and a b ass and scin illa o had on calo ime e su ound he acking
olume. The calo ime y p o ides high esolu ion ene gy and di ec ion measu emen s o
elec ons and had onic je s. A p eshowe de ec o consis ing o wo planes o silicon senso s
in e lea ed wi h lead is loca ed in on o he ECAL a |η|>1.479. Muons a e measu ed
in gas-ioniza ion de ec o s embedded in he s eel lux- e u n yoke ou side he solenoid.
The de ec o is nea ly he me ic, allowing o ene gy balance measu emen s in he plane
ans e se o he beam di ec ion. A wo- ie igge sys em selec s he mos in e es ing
pp collision e en s o use in physics analysis. A mo e de ailed desc ip ion o he CMS
de ec o , i s coo dina e sys em, and he main kinema ic a iables used in he analysis can
be ound elsewhe e [13].
3 Da ase s, igge s, and objec selec ion
E en s a e collec ed wi h a se o isola ed dilep on igge s ha equi e a ans e se mo-
men um pT>17 GeV o he leading lep on and pT>12 (8) GeV o he subleading
elec on (muon), and |η|<2.5 (2.4) o elec ons (muons). In o de o e ain high signal
e iciency, in pa icula o Lo en z-boos ed dilep on sys ems, non-isola ed dilep on igge s
wi h pT>33 (27) GeV o he i s elec on (muon) and pT>33 (8) GeV o he second
– 2 –
JHEP12(2016)013
elec on (muon) a e also used. The igge e iciencies a e measu ed in da a using e en s
selec ed by a sui e o je igge s.
E en s a e selec ed by equi ing wo opposi e-cha ge, same la o lep ons (e±e∓o
µ±µ∓) wi h pT>20 GeV and pseudo apidi y |η|<2.4. The dis ance be ween he lep ons
is eques ed o be a leas √∆φ2+ ∆η2= ∆R > 0.3 o a oid econs uc ion e iciency
di e ences be ween elec ons and muons in e en s wi h e y collinea lep ons. This e-
qui emen is elaxed o ∆R > 0.1 when he mass o he dilep on sys em is consis en wi h
a Z boson o p ese e accep ance o Z bosons wi h la ge ans e se momen um. To ensu e
symme y in accep ance be ween elec ons and muons, all e en s wi h one o hese wo
lep ons in he ba el-endcap ansi ion egion o he ECAL, 1.4<|η|<1.6, a e ejec ed.
A con ol sample o di e en la o lep ons (eµo µe) is de ined using he same lep on
selec ion c i e ia. All he pa ame e s abo e ha e been chosen in o de o maximize he
lep on selec ion e iciency while keeping he elec on and muon e iciencies simila .
Elec ons, econs uc ed by associa ing acks wi h ECAL clus e s, a e iden i ied using
a mul i a ia e app oach based on in o ma ion on he clus e shape in he ECAL, ack
quali y, and he ma ching be ween he ack and he ECAL clus e [14]. Addi ionally,
elec ons om pho on con e sions a e ejec ed. Muons a e econs uc ed om acks ound
in he muon sys em associa ed wi h acks in he acke . They a e iden i ied based on he
quali y o he ack i and he numbe o associa ed hi s in he acking de ec o s. Fo
bo h lep on la o s, he impac pa ame e wi h espec o he econs uc ed e ex wi h
he la ges p2
Tsum o associa ed acks (p ima y e ex) is equi ed o be wi hin 0.5 mm
in he ans e se plane and below 1 mm along he beam di ec ion. The lep on isola ion,
de ined as he scala pTsum o all pa icle candida es, excluding he lep on i sel , in a
cone a ound he lep on, di ided by he lep on pT, is equi ed o be smalle han 0.1 (0.2)
o elec ons (muons). A cone-size, a ying wi h lep on pT, is chosen o be ∆R= 0.2 o
pT<50 GeV, ∆R= 10 GeV/pT o 50 < pT<200 GeV, and ∆R= 0.05 o pT>200 GeV.
A pa icle low (PF) echnique [15,16] is used o econs uc pa icle candida es in he
e en . Je s a e clus e ed om hese candida es, excluding cha ged had ons no associa ed
o he p ima y e ex, using he an i-kTclus e ing algo i hm [17] implemen ed in he
Fas Je package [18,19] wi h a dis ance pa ame e o 0.4. Each je is equi ed o ha e
pT>35 GeV whe e he pTis co ec ed o non-uni o m de ec o esponse and mul iple
collision (pileup) e ec s [20,21], and |η|<2.4. A je is emo ed om he e en i i
lies wi hin ∆R < 0.4 o any o he selec ed lep ons. The scala sum o all je ans e se
momen a is e e ed o as HT. The magni ude o he nega i e ec o pTsum o all he
PF candida es is e e ed o as Emiss
T. Co ec ions o he je ene gy a e p opaga ed o he
Emiss
Tusing he p ocedu e de eloped o 7 TeV da a [20]. Iden i ica ion o je s o igina ing
om b-qua ks is pe o med wi h he combined seconda y e ex algo i hm, using a wo king
poin in which he ypical e iciency o b qua ks is a ound 65% and he mis agging a e
o ligh - la o je s is a ound 1.5% [22].
While he main SM backg ounds a e es ima ed using da a con ol samples, simula ed
e en s a e used o es ima e unce ain ies and mino SM backg ound componen s. Nex -
o-leading o de (NLO) and nex - o-NLO c oss sec ions [23–28] a e used o no malize he
simula ed backg ound samples, while NLO plus nex - o-leading-loga i hm (NLL) calcula-
– 3 –
JHEP12(2016)013
ions [29] a e used o he signal samples. Simula ed samples o D ell-Yan (DY) p oduc ion
associa ed wi h je s (DY + je s), γ+ je s, V + V, and V (V = W,Z) e en s a e gene -
a ed wi h he MadG aph mc@nlo 2.2.2 e en gene a o [23], while powheg 1 [30] is
used o and single op qua k p oduc ion. The ma ix elemen calcula ions pe o med
wi h hese gene a o s a e in e aced wi h py hia 8 [31] o he simula ion o pa on show-
e ing and had oniza ion. The NNPDF3.0 pa on dis ibu ion unc ions (PDF) [32] a e
used o all samples. The de ec o esponse is simula ed wi h a Gean 4 model [33] o
he CMS de ec o . The simula ion o new physics signals is pe o med using he Mad-
G aph5 aMC@NLO p og am a LO p ecision wi h up o 2 addi ional pa ons in he
ma ix elemen s calcula ions. E en s a e hen in e aced wi h py hia 8 o agmen a ion
and had oniza ion, and simula ed using he CMS as simula ion package [34]. Mul i-
ple pp in e ac ions a e supe imposed on he ha d collision and he simula ed samples a e
eweigh ed o e lec he beam condi ions. No maliza ion scale ac o s a e applied o he
simula ed samples o accoun o di e ences be ween simula ion and da a in he igge
and econs uc ion e iciencies.
4 Signal models
This sea ch a ge s di e en modes o neu alino decays in o inal s a es wi h wo opposi e-
sign, same- la o lep ons, je s, and Emiss
To igina ing om he LSPs. In o de o s udy
hese p ocesses, wo simpli ied models ha e been conside ed o he wo sea ch modes: one
p oducing a esonan lep on signa u e h ough an on-shell Z boson o he “on-Z” sea ch,
and ano he p oducing an edge-like dis ibu ion in he in a ian mass o he lep ons, o
he “edge” sea ch.
The i s o hese simpli ied models ep esen s gauge media ed supe symme y b eaking
SUSY models [35] and is e e ed o as he GMSB scena io. The model assumes he
p oduc ion o a pai o gluinos (eg) ha decay in o a pai o qua ks (u, d, s, c, o b) and
he ligh es neu alino eχ0
1. This neu alino decays in o an on-shell Z boson and a massless
g a i ino (
e
G) as seen in igu e 1(le ). A leas one o he Z bosons decays in o a pai o
lep ons p oducing he signa u e a ge ed by he on-Z sea ch.
The signal model o he edge sea ch, e e ed o as slep on-edge, assumes he p oduc-
ion o a pai o bo om squa ks, which decay o he nex - o-ligh es neu alino eχ0
2and a
b-qua k. Two decay modes o he eχ0
2a e conside ed each wi h 50% p obabili y. In he
i s one, he eχ0
2decays o a Z boson and he ligh es neu alino eχ0
1, which is s able. The
Z boson can be on o o -shell, depending on he mass di e ence be ween he neu alinos,
and decays acco ding o i s SM b anching ac ions. The second one ea u es subsequen
wo-body decays wi h an in e media e slep on
e
`:eχ0
2→
e
`` →``eχ0
1. The masses o he slep-
ons (ee,eµ) a e assumed degene a e and equal o he a e age o he eχ0
2and eχ0
1. The masses
o he
e
b and eχ0
2a e ee pa ame e s, while meχ0
1is ixed a 100 GeV. This scheme allows
he posi ion o he signal edge o a y along he in a ian mass dis ibu ion acco ding o
he mass di e ence be ween he eχ0
2and eχ0
1. The mass o he eχ0
1has been chosen in such a
way ha he di e ence o he eχ0
2mass is abo e 50 GeV, se ing he minimum possible edge
posi ion a 50 GeV. An example o one o he possible decays is shown in igu e 1( igh ).
– 4 –

JHEP12(2016)013
P1
P2
eg
eg
eχ0
1
eχ0
1
q
q
e
G
Z
Z
e
G
q
q
P1
P2
e
b
¯
e
b
eχ0
2
eχ0
2
Z(∗)
e
l
b
eχ0
1
eχ0
1
ℓ−
ℓ+
b
Figu e 1. Diag ams o gluino and
e
b pai p oduc ion and decays ealized in he simpli ied models.
The GMSB model a ge ed by he on-Z sea ch is shown on he le . On he igh , he slep on-
edge model ea u es cha ac e is ic edges in he m`` spec um gi en by he mass di e ence o he
eχ0
2and eχ0
1.
5 Signal egions
Signal egions o he on-Z and edge sea ches ollow wo p inciples: i s , hey a e designed
o p o ide sensi i i y o a ange o new physics models, including he simpli ied models
de ined abo e, and second, hey a e designed o in es iga e excesses in he 8 TeV da ase s
epo ed by he ATLAS and CMS Collabo a ions [11,12]. The selec ions desc ibed below
a e applied in addi ion o he dilep on selec ion desc ibed in sec ion 3.
5.1 On-Z signal egions
The on-Z sea ch is di ided in o a o al o h ee signal egion (SR) ca ego ies wi h dilep on
in a ian mass (m``) in he ange 81 < m`` <101 GeV. The i s wo, e e ed o as “SRA”
(2–3 je s and HT>400 GeV) and “SRB” (≥4 je s), ocus on e en s wi h low and high je
mul iplici y. These ca ego ies a e u he di ided acco ding o he numbe o b- agged je s
and Emiss
T. One addi ional signal egion, namely “ATLAS SR”, is de ined co esponding
o he egion showing a 3.0σexcess in he 8 TeV da ase o he ATLAS Collabo a ion [12].
The selec ion de ails a e speci ied in sec ion 7.
5.2 Edge sea ch signal egions
The signal egions in he edge sea ch emain la gely unchanged wi h espec o he sea ch
pe o med wi h he 8 TeV da ase [11]. The equi emen s on he je mul iplici y and Emiss
T
a e simila o he p e ious analysis, namely Emiss
T>100 (150) GeV i a leas h ee ( wo) je s
a e p esen . The ela i e cen ali y expec ed in he decays o hea y pa icles, combined wi h
he pe o mance o he de ec o in he ba el egion compa ed o he endcaps, mo i a es
a di ision o he e en sample depending on he |η|o he lep ons. The signal egion is
de ined as cen al i bo h lep ons lie wi hin |η|<1.4 and as o wa d i a leas one o he
lep ons is loca ed ou side o his |η| ange. Fu he mo e, wo exclusi e bins a e de ined in
he numbe o b- agged je s, one wi hou and one wi h a leas one such je .
The imp o emen s in he CMS econs uc ion algo i hms o he 13 TeV da a aking
lead o a ew di e ences be ween he 8 and 13 TeV signal egions. The lep on iden i ica ion
– 5 –
JHEP12(2016)013
algo i hms ha e been upda ed o he 13 TeV da a aking, wi h he mos ele an im-
p o emen being he use o a new elec on iden i ica ion algo i hm based on a mul i a ia e
disc imina o [14]. The je momen um h eshold has been lowe ed om 40 GeV o 35 GeV
gi en he imp o ed pile-up ejec ion achie ed a √s= 13 TeV, and he maximum |η|has
been educed om o 3.0 o 2.4, o ma ch he acke accep ance. The isola ion de ini ion
has also been modi ied o include a a iable cone size. The ejec ion o non-p omp lep ons
has been imp o ed as a consequence o all hese changes. Finally, addi ional non-isola ed
double-lep on igge s ha e been added o eco e e iciency o e y boos ed dilep on sys-
ems, al hough he inc ease in e iciency o he edge signal egions has been ound o be
small (<4%).
A coun ing expe imen is pe o med in i e dis inc egions o he m`` spec um wi h
e en s spli among he ou exclusi e (0 o >=1 b- agged je , cen al o o wa d) and wo
inclusi e (cen al o o wa d) ca ego ies. The i e mass egions include he h ee ha we e
p esen in he 8 TeV analysis ( he low-mass egion: 20 < m`` <70 GeV, he on-Z egion:
81 < m`` <101 GeV, and he high-mass egion: m`` >120 GeV), as well as he wo egions
immedia ely adjacen o he Z peak (70 < m`` <81 GeV and 101 < m`` <120 GeV). The
mass spec um in he cu en analysis hus co e s all m`` alues abo e 20 GeV.
In o de o di ec ly compa e he esul ob ained a 13 TeV wi h hose ob ained a
8 TeV, esul s o he signal egions a e also gi en inclusi ely in he numbe o b- agged
je s, Nb-je s ≥0. A summa y o all signal egions is gi en along wi h he expe imen al
esul s in sec ion 7.
6 S anda d model backg ound p edic ions
The backg ounds om SM p ocesses a e di ided in o wo ypes. Those ha p oduce
opposi e- la o (OF) pai s (e±µ∓) as o en as same- la o (SF) pai s (µ±µ∓, e±e∓) a e
e e ed o as la o -symme ic (FS) backg ounds. Among hem, he dominan con ibu-
ion a ises om op qua k-an i op qua k p oduc ion; sub-leading con ibu ions om WW,
Z/γ∗(→ττ), W single- op qua k p oduc ion, and lep ons om had on decays a e also
p esen . The o he ca ego y o backg ounds includes la o -co ela ed lep on p oduc ion
and only con ibu es wi h SF lep ons. The dominan con ibu ions a ise om DY p o-
duc ion in associa ion wi h je s, whe e he Emiss
Ta ises om mismeasu emen o he je
ene gies. Smalle con ibu ions come om WZ and ZZ p oduc ion, as well as a e p ocesses
such as Z. These backg ounds a e e e ed o as “O he SM” in his pape .
6.1 Fla o -symme ic backg ounds
The con ibu ion o la o -symme ic p ocesses in he SF channels is es ima ed om he
OF con ol sample. While he e is a p oduc ion symme y be ween he wo channels a
pa icle le el, i can be dis o ed by he di e en igge , econs uc ion, and iden i ica ion
e iciencies o elec ons and muons. The backg ound es ima e is he e o e ob ained om
he obse ed OF yield by applying a mul iplica i e co ec ion ac o , RSF/OF. This ac o is
de e mined by wo independen me hods, a di ec measu emen in a con ol egion en iched
– 6 –
JHEP12(2016)013
Cen al Fo wa d
Da a MC Da a MC
(1/2)( µ/e+ −1
µ/e) 1.01 ±0.01 1.01 ±0.01 1.02 ±0.04 1.03 ±0.05
RT1.00 ±0.07 1.02 ±0.06 1.04 ±0.09 1.04 ±0.06
RSF/OF
F om ac o iza ion 1.01 ±0.07 1.03 ±0.06 1.06 ±0.10 1.05 ±0.08
Di ec measu emen 1.05 ±0.06 1.05 ±0.03 1.10 ±0.09 1.08 ±0.04
Weigh ed a e age 1.03 ±0.05 1.04 ±0.03 1.08 ±0.07 1.07 ±0.04
Table 1. Summa y o RSF/OF alues ob ained in da a and simula ion using he di ec and ac o ized
me hods, and he inal combina ion.
in FS backg ounds, and om he measu emen o lep on e iciencies, ac o ized in o he
e ec s o econs uc ion, iden i ica ion, and igge .
The di ec measu emen is pe o med in he egion wi h Nje s = 2 and 100 < Emiss
T<
150 GeV, excluding he mass ange 70 < m`` <110 GeV o educe backg ound con ibu ions
om esonan Z-boson p oduc ion. He e, RSF/OF is e alua ed using he obse ed yield o
SF and OF e en s, 4RSF/OF =NSF/NOF. The applicabili y o his alue in he signal
egion is con i med by compa ing i wi h he RSF/OF alue ob ained in he signal egion
o simula ed e en s. The di e ence be ween bo h alues is ound o be smalle han i s
s a is ical unce ain y (3%). The la e alue is assigned as he sys ema ic unce ain y in
he measu emen .
Fo he ac o ized app oach, he a io o muon o elec on econs uc ion and iden i-
ica ion e iciencies, µ/e, is measu ed in a DY-en iched egion wi h Nje s ≥2 and Emiss
T<
50 GeV and equi ing 60 < m`` <120 GeV, esul ing in a la ge sample o e±e∓and µ±µ∓
e en s wi h simila kinema ics o he signal egion in e ms o je mul iplici y. Assum-
ing he ac o iza ion o lep on e iciencies in an e en , he e iciency a io is measu ed as
µ/e=√Nµ+µ−/Ne+e−. A sys ema ic unce ain y o 10% (20%) is assigned o µ/ein he
cen al ( o wa d) lep on apidi y selec ion based on s udies o i s dependency on he lep on
kinema ics, he amoun o Emiss
T, and he je mul iplici y. The igge e iciencies o he
h ee di e en la o combina ions a e used o de ine he ac o RT=√T
µ±µ∓T
e±e∓/T
e±µ∓,
which akes in o accoun he di e ence be ween SF and OF channels a he igge le el.
The inal co ec ion is RSF/OF = (1/2)( µ/e+ −1
µ/e)RT. He e, µ/eis summed wi h i s
in e se, leading o a la ge educ ion o he associa ed unce ain y.
The esul s o he di ec measu emen and he ac o iza ion me hod a e shown in
able 1. Since he esul s a e in ag eemen and a e ob ained on independen da a samples,
hey a e combined using he weigh ed a e age. The esul ing co ec ion is RSF/OF =
1.03 ±0.05 (1.08 ±0.07) o he cen al ( o wa d) lep on apidi y selec ion.
6.2 D ell-Yan-like backg ounds
The Emiss
T om he DY backg ound is es ima ed om Emiss
T empla es ob ained om a
da a con ol egion. The main p emise o his es ima e based on da a is ha Emiss
Tin
– 7 –
JHEP12(2016)013
Z + je s e en s o igina es om he limi ed de ec o esolu ion when measu ing he objec s
making up he had onic sys em ha ecoils agains he Z boson. We es ima e he shape o
he Emiss
Tdis ibu ion om a con ol sample o γ+ je s e en s whe e he je sys em ecoils
agains a pho on ins ead o a Z boson. Signal egions equi ing a leas one b- agged je
can lead o a small amoun o addi ional Emiss
Tdue o he neu inos in semilep onic b qua k
decays. To accoun o his e ec , he Emiss
T empla es a e ex ac ed om a con ol sample
o γ+ je s e en s wi h a leas one b- agged je .
The γ+ je s e en s in da a a e selec ed wi h a sui e o single-pho on igge s wi h pT
h esholds a ying om 22 o 165 GeV. The igge s wi h h esholds below 165 GeV a e
p escaled such ha only a ac ion o accep ed e en s a e eco ded, and he e en s a e
weigh ed by he igge p escales o ma ch he in eg a ed luminosi y collec ed wi h he
signal dilep on igge s. In o de o accoun o kinema ic di e ences be ween he had onic
sys ems in he γ+je s and he Z+je s sample, he γ+je s sample is eweigh ed such ha he
boson pTdis ibu ion ma ches ha o he Z + je s sample. This eweigh ing is pe o med
o each signal egion, whe e he same equi emen s a e applied o he Z + je s and he
γ+ je s samples. The esul ing Emiss
Tdis ibu ion is hen no malized o he obse ed da a
yield in he egion Emiss
T<50 GeV whe e Z + je s is he dominan backg ound.
The con ol sample used o es ima e his backg ound does no need o ha e a high
pu i y o pho ons, since he Emiss
Tis assumed o o igina e om je mismeasu emen . How-
e e , i is equi ed ha he pho on-like objec be well measu ed so as o no con ibu e
o he Emiss
Tmismeasu emen . The s abili y o he pho on selec ion is es ed by epea ing
his backg ound measu emen a e igh ening he pho on ID equi emen s, and i is ound
ha he esul s a e consis en wi h he measu emen done using he loose selec ion. In
o de o ensu e he pho on-like objec is su icien ly well-measu ed and ha he Emiss
Tin
he γ+ je s sample comes p ima ily om he mismeasu emen o he je sys em, he ol-
lowing condi ions a e equi ed: ∆φ(Emiss
T, γ)>0.4, a e o on e en s whe e he pho on can
be connec ed o a pa e n o hi s in he pixel de ec o , and he pho on o be ma ched o
a je wi hin a cone o ∆R= 0.4. The equi emen ∆φ(Emiss
T, γ)>0.4 p o ec s agains
unde -measu emen o he pho on ene gy, which is much mo e likely o calo ime e -based
quan i ies han o e -measu emen . Finally, he elec omagne ic ac ion o he ma ched
je ( ac ion o je ene gy deposi ed in he elec omagne ic calo ime e wi h espec o he
o al ene gy deposi ed in bo h, he elec omagne ic and had onic calo ime e ) is equi ed
o be >0.7.
The dominan unce ain ies in he Emiss
T empla e p edic ion come om he limi ed
size o he samples used. The unce ain y in he p edic ion akes in o accoun he s a is ical
unce ain y o he γ+ je s sample in he signal Emiss
T egions, which anges om 10–50%.
The s a is ical unce ain y o he no maliza ion o Emiss
T<50 GeV is included and anges
om 4–10%, as shown in able 2. A closu e es o he me hod is pe o med in simula ion,
using γ+je s o p edic he yield o Z+ je s. An unce ain y is assigned om he esul s o
his es as ei he he la ges disc epancy be ween he γ+ je s p edic ion and he Z + je s
yield o each Emiss
T egion, o he MC s a is ical unce ain y, whiche e is la ge . The alues
a e lis ed in able 3and a y be ween 4 and 50%, depending on he Emiss
T egion. Finally, he
impac o pho on pu i y on he es ima e is s udied in da a by epea ing he p edic ion wi h
– 8 –
JHEP12(2016)013
Sou ce o unce ain y Unce ain y (%)
Luminosi y 2.7
Pileup 0–6
b ag modeling 2–20
Lep on econs uc ion and isola ion 2–4
Fas simula ion scale ac o s 1–6
T igge modeling 5
Je ene gy scale 0–8
ISR modeling 1–3
S a is ical unce ain y 1–20
To al unce ain y 7–32
Table 6. Lis o sys ema ic unce ain ies aken in o accoun o he signal yields and ypical alues.
[GeV]
g
~
m
1000 1100 1200 1300 1400 1500
[GeV]
1
0
χ
∼m
200
400
600
800
1000
1200
1400
1600
[pb]σ95% CL uppe limi on
-2
10
-1
10
1
[pb]σ95% CL uppe limi on
-2
10
-1
10
1
exp.
σ 1 ±Expec ed limi ,
heo y
σ 1 ±Obse ed limi ,
= 1 GeV
G
~
; mG
~
Z→
0
1
χ,
0
1
χ 2j + → g
~
, g
~
g
~
→pp
NLO+NLL exclusion
(13 TeV)
-1
2.3 bCMS
Figu e 4. C oss sec ion uppe limi s and exclusions con ou s a 95% CL wi h he esul s o he
on-Z sea ch in e p e ed in he GMSB model. The egion o he le o he ed do ed (black solid)
line shows he masses which a e excluded by he expec ed (obse ed) limi .
neu alino mass o ∼250 GeV co esponds o a kinema ic edge loca ed a ∼150–200 GeV.
In his case he signal is sp ead e enly ac oss all mass egions, while in he case o low
(high) eχ0
2masses, he majo i y o signal e en s all in o he low- (high-) mass bin, which
inc eases he sensi i i y o hese mass poin s. The expec ed uppe limi s in he bo om
squa k/neu alino mass plane a e simila o he limi s se by he 8 TeV analysis. In wo
pa ame e egions he expec ed limi s a e sligh ly imp o ed due o he in oduc ion o new
signal egions. The in oduc ion o he below-Z and abo e-Z signal egion inc eases he
– 15 –

JHEP12(2016)013
[GeV]
b
~
m
400 500 600 700 800 900
[GeV]
0
2
χ
∼
m
200
300
400
500
600
700
800
900
[pb]σ95% CL uppe limi on
1−
10
1
(13 TeV)
-1
2.3 b
CMS
exp.
σ 1 ±Expec ed limi ,
heo y
σ 1 ±Obse ed limi ,
); NLO+NLL exclusion
0
1
χ
∼
+ m
0
2
χ
∼
= 0.5(m
l
~
m
= 100 GeV
0
1
χ
∼
l; m
0
1
χ
∼
→l
~
,
0
1
χ
∼
l/Zl
~
→
0
2
χ
∼
b,
0
2
χ
∼
→b
~
, b
~
b
~
→pp
Figu e 5. C oss sec ion uppe limi s and exclusion con ou s a 95% CL wi h he esul s o he
edge sea ch in e p e ed in he slep on-edge model. The egion o he le o he ed do ed (black
solid) line shows he masses which a e excluded by he expec ed (obse ed) limi .
sensi i i y o he analysis o sbo om masses o abou 550 GeV and neu alino masses o
a ound 250 GeV. The second imp o emen is he ca ego iza ion acco ding o he numbe
o b- agged je s ha gi es addi ional sensi i i y close o he sbo om and neu alino mass
diagonal whe e e en s wi h ze o b- agged je s become impo an since he p oduced b je s
ha e less ene gy and a e o en no iden i ied. The obse ed uppe limi s in he egion wi h
small neu alino masses ha e been la gely imp o ed wi h espec o he 8 TeV esul s om
500 o app oxima ely 620 GeV.
9 Summa y
A sea ch o physics beyond he s anda d model has been p esen ed in he opposi e-sign,
same- la o lep on inal s a e using a da a sample o pp collisions collec ed a a cen e -
o -mass ene gy o 13 TeV, co esponding o an in eg a ed luminosi y o 2.3 b−1, eco ded
wi h he CMS de ec o in 2015. Sea ches a e pe o med o signals ha ei he p oduce a
kinema ic edge, o a peak a he Z boson mass, in he dilep on in a ian mass dis ibu ion.
Compa ing he obse a ion o es ima es o SM backg ounds ob ained om da a con ol
samples, no s a is ically signi ican e idence o a signal has been obse ed. No ably, his
is ue o he wo e en selec ions whe e excesses o 2.6 and 3.0σsigni icance had been
obse ed by he CMS and ATLAS collabo a ions in hei espec i e 8 TeV esul s [11,12].
The sea ch o e en s con aining an on-shell Z boson is in e p e ed in a model o
gauge-media ed supe symme y b eaking, whe e he Z bosons a e p oduced in decay chains
ini ia ed h ough gluino pai p oduc ion, and whe e he b anching a ios ha e been ixed
– 16 –
JHEP12(2016)013
o 100% o p oduce he desi ed opology. Gluino masses below 1.28 TeV o high neu alino
masses and 1.03 TeV o low neu alino masses ha e been excluded, ex ending he p e ious
exclusion limi s de i ed om a simila analysis a 8 TeV by almos 200 GeV.
The sea ch o an edge is in e p e ed in a simpli ied model based on bo om squa k
pai p oduc ion, whe e dilep on mass edges a e p oduced in decay chains con aining he
wo ligh es neu alinos and a slep on, whe e again he b anching a ios ha e been ixed
o p oduce he desi ed opology. Bo om squa k masses below 550 and 620 GeV ha e been
excluded, depending on he eχ0
2mass. These limi s a e simila o p e ious exclusion limi s
excep o low eχ0
2masses whe e he excluded limi s ha e been ex ended by abou 100 GeV.
Acknowledgmen s
We cong a ula e ou colleagues in he CERN accele a o depa men s o he excellen
pe o mance o he LHC and hank he echnical and adminis a i e s a s a CERN and
a o he CMS ins i u es o hei con ibu ions o he success o he CMS e o . In ad-
di ion, we g a e ully acknowledge he compu ing cen e s and pe sonnel o he Wo ldwide
LHC Compu ing G id o deli e ing so e ec i ely he compu ing in as uc u e essen ial
o ou analyses. Finally, we acknowledge he endu ing suppo o he cons uc ion and
ope a ion o he LHC and he CMS de ec o p o ided by he ollowing unding agencies:
BMWFW and FWF (Aus ia); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ,
and FAPESP (B azil); MES (Bulga ia); CERN; CAS, MoST, and NSFC (China); COL-
CIENCIAS (Colombia); MSES and CSF (C oa ia); RPF (Cyp us); SENESCYT (Ecuado );
MoER, ERC IUT and ERDF (Es onia); Academy o Finland, MEC, and HIP (Finland);
CEA and CNRS/IN2P3 (F ance); BMBF, DFG, and HGF (Ge many); GSRT (G eece);
OTKA and NIH (Hunga y); DAE and DST (India); IPM (I an); SFI (I eland); INFN
(I aly); MSIP and NRF (Republic o Ko ea); LAS (Li huania); MOE and UM (Malaysia);
BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MBIE (New
Zealand); PAEC (Pakis an); MSHE and NSC (Poland); FCT (Po ugal); JINR (Dubna);
MON, RosA om, RAS and RFBR (Russia); MESTD (Se bia); SEIDI and CPAN (Spain);
Swiss Funding Agencies (Swi ze land); MST (Taipei); ThEPCen e , IPST, STAR and
NSTDA (Thailand); TUBITAK and TAEK (Tu key); NASU and SFFR (Uk aine); STFC
(Uni ed Kingdom); DOE and NSF (U.S.A.).
Indi iduals ha e ecei ed suppo om he Ma ie-Cu ie p og am and he Eu opean
Resea ch Council and EPLANET (Eu opean Union); he Le en is Founda ion; he A.
P. Sloan Founda ion; he Alexande on Humbold Founda ion; he Belgian Fede al Sci-
ence Policy O ice; he Fonds pou la Fo ma ion `a la Reche che dans l’Indus ie e dans
l’Ag icul u e (FRIA-Belgium); he Agen schap oo Inno a ie doo We enschap en Tech-
nologie (IWT-Belgium); he Minis y o Educa ion, You h and Spo s (MEYS) o he Czech
Republic; he Council o Science and Indus ial Resea ch, India; he HOMING PLUS p o-
g am o he Founda ion o Polish Science, co inanced om Eu opean Union, Regional
De elopmen Fund, he Mobili y Plus p og am o he Minis y o Science and Highe Edu-
ca ion, he OPUS p og am con ac 2014/13/B/ST2/02543 and con ac Sona a-bis DEC-
2012/07/E/ST2/01406 o he Na ional Science Cen e (Poland); he Thalis and A is eia
– 17 –
JHEP12(2016)013
p og ams co inanced by EU-ESF and he G eek NSRF; he Na ional P io i ies Resea ch
P og am by Qa a Na ional Resea ch Fund; he P og ama Cla ´ın-COFUND del P incipado
de As u ias; he Rachadapisek Sompo Fund o Pos doc o al Fellowship, Chulalongko n
Uni e si y and he Chulalongko n Academic in o I s 2nd Cen u y P ojec Ad ancemen
P ojec (Thailand); and he Welch Founda ion, con ac C-1845.
Open Access. This a icle is dis ibu ed unde he e ms o he C ea i e Commons
A ibu ion License (CC-BY 4.0), which pe mi s any use, dis ibu ion and ep oduc ion in
any medium, p o ided he o iginal au ho (s) and sou ce a e c edi ed.
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JHEP12(2016)013
The CMS collabo a ion
Ye e an Physics Ins i u e, Ye e an, A menia
V. Khacha yan, A.M. Si unyan, A. Tumasyan
Ins i u ¨u Hochene giephysik de OeAW, Wien, Aus ia
W. Adam, E. Asila , T. Be gaue , J. B ands e e , E. B ondolin, M. D agice ic, J. E ¨o,
M. Flechl, M. F iedl, R. F ¨uhwi h1, V.M. Ghe e, C. Ha l, N. H¨o mann, J. H ubec,
M. Jei le 1, A. K¨onig, I. K ¨a schme , D. Liko, T. Ma sushi a, I. Mikulec, D. Rabady,
N. Rad, B. Rahba an, H. Roh inge , J. Schieck1, J. S auss, W. T ebe e -T ebe spu g,
W. Wal enbe ge , C.-E. Wulz1
Na ional Cen e o Pa icle and High Ene gy Physics, Minsk, Bela us
V. Mossolo , N. Shumeiko, J. Sua ez Gonzalez
Uni e si ei An we pen, An we pen, Belgium
S. Alde wei eld , E.A. De Wol , X. Janssen, J. Lauwe s, M. Van De Klunde , H. Van
Hae e mae , P. Van Mechelen, N. Van Remo el, A. Van Spilbeeck
V ije Uni e si ei B ussel, B ussel, Belgium
S. Abu Zeid, F. Blekman, J. D’Hond , N. Daci, I. De B uyn, K. De oo e , N. He acleous,
S. Lowe e, S. Moo ga , L. Mo eels, A. Olb ech s, Q. Py hon, S. Ta e nie , W. Van
Doninck, P. Van Mulde s, I. Van Pa ijs
Uni e si ´e Lib e de B uxelles, B uxelles, Belgium
H. B un, C. Caillol, B. Cle baux, G. De Len decke , H. Delannoy, G. Fasanella, L. Fa a ,
R. Goldouzian, A. G ebenyuk, G. Ka apos oli, T. Lenzi, A. L´eona d, J. Lue ic, T. Mae -
schalk, A. Ma ino , A. Randle-conde, T. Se a, C. Vande Velde, P. Vanlae , R. Yonamine,
F. Zenoni, F. Zhang2
Ghen Uni e si y, Ghen , Belgium
A. Cimmino, T. Co nelis, D. Dobu , A. Fago , G. Ga cia, M. Gul, D. Poy az, S. Sal a,
R. Sch¨o beck, M. Ty ga , W. Van D iessche, E. Yazgan, N. Zaganidis
Uni e si ´e Ca holique de Lou ain, Lou ain-la-Neu e, Belgium
H. Bakhshiansohi, C. Belu i3, O. Bondu, S. B oche , G. B uno, A. Caud on, L. Cea d,
S. De Vissche , C. Delae e, M. Delcou , L. Fo homme, B. F ancois, A. Giammanco,
A. Ja a i, P. Jez, M. Komm, V. Lemai e, A. Magi e i, A. Me ens, M. Musich, C. Nu ens,
K. Pio zkowski, L. Que enmon , M. Sel aggi, M. Vidal Ma ono, S. We z
Uni e si ´e de Mons, Mons, Belgium
N. Beliy
Cen o B asilei o de Pesquisas Fisicas, Rio de Janei o, B azil
W.L. Ald´a J´unio , F.L. Al es, G.A. Al es, L. B i o, C. Hensel, A. Mo aes, M.E. Pol,
P. Rebello Teles
– 21 –
JHEP12(2016)013
Uni e sidade do Es ado do Rio de Janei o, Rio de Janei o, B azil
E. Belchio Ba is a Das Chagas, W. Ca alho, J. Chinella o4, A. Cus ´odio, E.M. Da Cos a,
G.G. Da Sil ei a, D. De Jesus Damiao, C. De Oli ei a Ma ins, S. Fonseca De Souza,
L.M. Hue as Gua i a, H. Malbouisson, D. Ma os Figuei edo, C. Mo a He e a, L. Mundim,
H. Nogima, W.L. P ado Da Sil a, A. San o o, A. Sznajde , E.J. Tonelli Mangano e4,
A. Vilela Pe ei a
Uni e sidade Es adual Paulis a a, Uni e sidade Fede al do ABC b, S˜ao Paulo,
B azil
S. Ahujaa, C.A. Be na desb, S. Dog aa, T.R. Fe nandez Pe ez Tomeia, E.M. G ego esb,
P.G. Me cadan eb, C.S. Moona, S.F. No aesa, Sand a S. Padulaa, D. Rome o Abadb,
J.C. Ruiz Va gas
Ins i u e o Nuclea Resea ch and Nuclea Ene gy, So ia, Bulga ia
A. Aleksand o , R. Hadjiiska, P. Iaydjie , M. Rodozo , S. S oyko a, G. Sul ano ,
M. Vu o a
Uni e si y o So ia, So ia, Bulga ia
A. Dimi o , I. Glushko , L. Li o , B. Pa lo , P. Pe ko
Beihang Uni e si y, Beijing, China
W. Fang5
Ins i u e o High Ene gy Physics, Beijing, China
M. Ahmad, J.G. Bian, G.M. Chen, H.S. Chen, M. Chen, Y. Chen6, T. Cheng, C.H. Jiang,
D. Legga , Z. Liu, F. Romeo, S.M. Shaheen, A. Spiezia, J. Tao, C. Wang, Z. Wang,
H. Zhang, J. Zhao
S a e Key Labo a o y o Nuclea Physics and Technology, Peking Uni e si y,
Beijing, China
Y. Ban, Q. Li, S. Liu, Y. Mao, S.J. Qian, D. Wang, Z. Xu
Uni e sidad de Los Andes, Bogo a, Colombia
C. A ila, A. Cab e a, L.F. Chapa o Sie a, C. Flo ez, J.P. Gomez, C.F. Gonz´alez
He n´andez, J.D. Ruiz Al a ez, J.C. Sanab ia
Uni e si y o Spli , Facul y o Elec ical Enginee ing, Mechanical Enginee ing
and Na al A chi ec u e, Spli , C oa ia
N. Godino ic, D. Lelas, I. Puljak, P.M. Ribei o Cip iano
Uni e si y o Spli , Facul y o Science, Spli , C oa ia
Z. An uno ic, M. Ko ac
Ins i u e Rudje Bosko ic, Zag eb, C oa ia
V. B iglje ic, D. Fe encek, K. Kadija, S. Micano ic, L. Sudic
Uni e si y o Cyp us, Nicosia, Cyp us
A. A ikis, G. Ma omanolakis, J. Mousa, C. Nicolaou, F. P ochos, P.A. Razis,
H. Rykaczewski
– 22 –
JHEP12(2016)013
Cha les Uni e si y, P ague, Czech Republic
M. Finge 7, M. Finge J .7
Uni e sidad San F ancisco de Qui o, Qui o, Ecuado
E. Ca e a Ja in
Academy o Scien i ic Resea ch and Technology o he A ab Republic o Egyp ,
Egyp ian Ne wo k o High Ene gy Physics, Cai o, Egyp
Y. Ass an8,9, T. Elka awy10, A. Elli hi Kamel11, A. Mah ous12
Na ional Ins i u e o Chemical Physics and Biophysics, Tallinn, Es onia
B. Calpas, M. Kadas ik, M. Mu umaa, L. Pe ini, M. Raidal, A. Tiko, C. Veelken
Depa men o Physics, Uni e si y o Helsinki, Helsinki, Finland
P. Ee ola, J. Pekkanen, M. Vou ilainen
Helsinki Ins i u e o Physics, Helsinki, Finland
J. H¨a k¨onen, V. Ka im¨aki, R. Kinnunen, T. Lamp´en, K. Lassila-Pe ini, S. Leh i, T. Lind´en,
P. Luukka, T. Pel ola, J. Tuominiemi, E. Tuo inen, L. Wendland
Lappeen an a Uni e si y o Technology, Lappeen an a, Finland
J. Tal i ie, T. Tuu a
DSM/IRFU, CEA/Saclay, Gi -su -Y e e, F ance
M. Besancon, F. Coude c, M. Deja din, D. Deneg i, B. Fabb o, J.L. Fau e, C. Fa a o,
F. Fe i, S. Ganjou , S. Ghosh, A. Gi e naud, P. G as, G. Hamel de Monchenaul , P. Ja y,
I. Kuche , E. Locci, M. Mache , J. Malcles, J. Rande , A. Rosowsky, M. Ti o , A. Zghiche
Labo a oi e Lep ince-Ringue , Ecole Poly echnique, IN2P3-CNRS, Palaiseau,
F ance
A. Abdulsalam, I. An opo , S. Ba ioni, F. Beaude e, P. Busson, L. Cadamu o,
E. Chapon, C. Cha lo , O. Da ignon, R. G anie de Cassagnac, M. Jo, S. Lisniak, P. Min´e,
I.N. Na anjo, M. Nguyen, C. Ochando, G. O ona, P. Paganini, P. Piga d, S. Regna d,
R. Sale no, Y. Si ois, T. S eble , Y. Yilmaz, A. Zabi
Ins i u Plu idisciplinai e Hube Cu ien, Uni e si ´e de S asbou g, Uni e -
si ´e de Hau e Alsace Mulhouse, CNRS/IN2P3, S asbou g, F ance
J.-L. Ag am13, J. And ea, A. Aubin, D. Bloch, J.-M. B om, M. Bu ignol, E.C. Chabe ,
N. Chanon, C. Colla d, E. Con e13, X. Coubez, J.-C. Fon aine13, D. Gel´e, U. Goe lach,
A.-C. Le Bihan, J.A. Me lin14, K. Sko pen, P. Van Ho e
Cen e de Calcul de l’Ins i u Na ional de Physique Nucleai e e de Physique
des Pa icules, CNRS/IN2P3, Villeu banne, F ance
S. Gad a
Uni e si ´e de Lyon, Uni e si ´e Claude Be na d Lyon 1, CNRS-IN2P3, Ins i u
de Physique Nucl´eai e de Lyon, Villeu banne, F ance
S. Beauce on, C. Be ne , G. Boudoul, E. Bou ie , C.A. Ca illo Mon oya, R. Chie ici,
D. Con a do, B. Cou bon, P. Depasse, H. El Mamouni, J. Fan, J. Fay, S. Gascon,
– 23 –
JHEP12(2016)013
M. Gouze i ch, G. G enie , B. Ille, F. Laga de, I.B. Lak ineh, M. Le huillie , L. Mi abi o,
A.L. Pequegno , S. Pe ies, A. Popo 15, D. Sabes, V. So dini, M. Vande Donck , P. Ve die ,
S. Vi e
Geo gian Technical Uni e si y, Tbilisi, Geo gia
T. To iash ili16
Tbilisi S a e Uni e si y, Tbilisi, Geo gia
Z. Tsamalaidze7
RWTH Aachen Uni e si y, I. Physikalisches Ins i u , Aachen, Ge many
C. Au e mann, S. Be anek, L. Feld, A. Heis e , M.K. Kiesel, K. Klein, M. Lipinski,
A. Os apchuk, M. P eu en, F. Raupach, S. Schael, C. Schomake s, J.F. Schul e, J. Schulz,
T. Ve lage, H. Webe , V. Zhuko 15
RWTH Aachen Uni e si y, III. Physikalisches Ins i u A, Aachen, Ge many
M. B odski, E. Die z-Lau sonn, D. Ducha d , M. End es, M. E dmann, S. E dweg,
T. Esch, R. Fische , A. G¨u h, T. Hebbeke , C. Heidemann, K. Hoep ne , S. Knu zen,
M. Me schmeye , A. Meye , P. Mille , S. Mukhe jee, M. Olschewski, K. Padeken, P. Papacz,
T. Pook, M. Radziej, H. Rei hle , M. Riege , F. Scheuch, L. Sonnenschein, D. Teyssie ,
S. Th¨ue
RWTH Aachen Uni e si y, III. Physikalisches Ins i u B, Aachen, Ge many
V. Che epano , Y. E dogan, G. Fl¨ugge, W. Haj Ahmad, F. Hoehle, B. Ka goll, T. K ess,
A. K¨unsken, J. Lingemann, A. Neh ko n, A. Nowack, I.M. Nugen , C. Pis one, O. Poo h,
A. S ahl14
Deu sches Elek onen-Synch o on, Hambu g, Ge many
M. Aldaya Ma in, C. Asawa ang akuldee, I. Asin, K. Bee nae , O. Behnke, U. Beh ens,
A.A. Bin Anua , K. Bo as17, A. Campbell, P. Conno , C. Con e as-Campana,
F. Cos anza, C. Diez Pa dos, G. Dolinska, G. Ecke lin, D. Ecks ein, E. Gallo18, J. Ga ay
Ga cia, A. Geise , A. Gizhko, J.M. G ados Luyando, P. Gunnellini, A. Ha b, J. Hauk,
M. Hempel19, H. Jung, A. Kaloge opoulos, O. Ka acheban19, M. Kasemann, J. Kea eney,
J. Kiesele , C. Kleinwo , I. Ko ol, W. Lange, A. Lelek, J. Leona d, K. Lipka, A. Lobano ,
W. Lohmann19, R. Mankel, I.-A. Melze -Pellmann, A.B. Meye , G. Mi ag, J. Mnich,
A. Mussgille , E. N oma i, D. Pi zl, R. Placaky e, A. Raspe eza, B. Roland, M. ¨
O. Sahin,
P. Saxena, T. Schoe ne -Sadenius, C. Sei z, S. Spannagel, N. S e aniuk, K.D. T ippkewi z,
G.P. Van Onsem, R. Walsh, C. Wissing
Uni e si y o Hambu g, Hambu g, Ge many
V. Blobel, M. Cen is Vignali, A.R. D aege , T. D eye , E. Ga u i, K. Goebel, D. Gonzalez,
J. Halle , M. Ho mann, A. Junkes, R. Klanne , R. Kogle , N. Ko alchuk, T. Lapsien,
T. Lenz, I. Ma chesini, D. Ma coni, M. Meye , M. Niedziela, D. Nowa schin, J. O ,
F. Pan aleo14, T. Pei e , A. Pe ieanu, J. Poehlsen, C. Sande , C. Scha , P. Schlepe ,
A. Schmid , S. Schumann, J. Schwand , H. S adie, G. S einb ¨uck, F.M. S obe , M. S ¨o e ,
H. Tholen, D. T oendle, E. Usai, L. Vanelde en, A. Vanhoe e , B. Vo mwald
– 24 –
JHEP12(2016)013
Gomez, T. Rod igo, A. Ruiz-Jimeno, L. Scodella o, N. T e isani, I. Vila, R. Vila
Co abi a e
CERN, Eu opean O ganiza ion o Nuclea Resea ch, Gene a, Swi ze land
D. Abbaneo, E. Au ay, G. Auzinge , M. Bach is, P. Baillon, A.H. Ball, D. Ba ney,
P. Bloch, A. Bocci, A. Bona o, C. Bo a, T. Campo esi, R. Cas ello, M. Cepeda, G. Ce mi-
na a, M. D’Al onso, D. d’En e ia, A. Dab owski, V. Dapon e, A. Da id, M. De G u ola,
F. De Guio, A. De Roeck, E. Di Ma co43, M. Dobson, M. Do de ic, B. Do ney, T. du P ee,
D. Duggan, M. D¨unse , N. Dupon , A. Ellio -Peise , S. Fa oukh, G. F anzoni, J. Fulche ,
W. Funk, D. Gigi, K. Gill, M. Gi one, F. Glege, D. Gulhan, S. Gundacke , M. Gu ho ,
J. Hamme , P. Ha is, J. Hegeman, V. Innocen e, P. Jano , H. Ki schenmann, V. Kn¨unz,
A. Ko nmaye 14, M.J. Ko elainen, K. Kousou is, M. K amme 1, P. Lecoq, C. Lou en¸co,
M.T. Lucchini, L. Malge i, M. Mannelli, A. Ma elli, F. Meije s, S. Me si, E. Meschi,
F. Moo ga , S. Mo o ic, M. Mulde s, H. Neugebaue , S. O anelli44, L. O sini, L. Pape,
E. Pe ez, M. Pe uzzi, A. Pe illi, G. Pe ucciani, A. P ei e , M. Pie ini, A. Racz, T. Reis,
G. Rolandi45, M. Ro e e, M. Ruan, H. Sakulin, J.B. Sau an, C. Sch¨a e , C. Schwick,
M. Seidel, A. Sha ma, P. Sil a, M. Simon, P. Sphicas46, J. S eggemann, M. S oye,
Y. Takahashi, M. Tosi, D. T eille, A. T iossi, A. Tsi ou, V. Veckalns47, G.I. Ve es21,
N. Wa dle, A. Zagozdzinska35, W.D. Zeune
Paul Sche e Ins i u , Villigen, Swi ze land
W. Be l, K. Dei e s, W. E dmann, R. Ho isbe ge , Q. Ing am, H.C. Kaes li, D. Ko linski,
U. Langenegge , T. Rohe
Ins i u e o Pa icle Physics, ETH Zu ich, Zu ich, Swi ze land
F. Bachmai , L. B¨ani, L. Bianchini, B. Casal, G. Disse o i, M. Di ma , M. Doneg`a,
P. Elle , C. G ab, C. Heidegge , D. Hi s, J. Hoss, G. Kasieczka, P. Lecom e†, W. Lus-
e mann, B. Mangano, M. Ma ionneau, P. Ma inez Ruiz del A bol, M. Mascio ecchio,
M.T. Meinha d, D. Meis e , F. Micheli, P. Musella, F. Nessi-Tedaldi, F. Pandol i,
J. Pa a, F. Pauss, G. Pe in, L. Pe ozzi, M. Qui na , M. Rossini, M. Sch¨onenbe ge ,
A. S a odumo 48, M. Takahashi, V.R. Ta ola o, K. Theo ila os, R. Wallny
Uni e si ¨a Z¨u ich, Zu ich, Swi ze land
T.K. Aa es ad, C. Amsle 49, L. Caminada, M.F. Canelli, V. Chiochia, A. De Cosa,
C. Galloni, A. Hinzmann, T. H eus, B. Kilmins e , C. Lange, J. Ngadiuba, D. Pinna,
G. Rauco, P. Robmann, D. Sale no, Y. Yang
Na ional Cen al Uni e si y, Chung-Li, Taiwan
V. Candelise, T.H. Doan, Sh. Jain, R. Khu ana, M. Konyushikhin, C.M. Kuo, W. Lin,
Y.J. Lu, A. Pozdnyako , S.S. Yu
Na ional Taiwan Uni e si y (NTU), Taipei, Taiwan
A un Kuma , P. Chang, Y.H. Chang, Y.W. Chang, Y. Chao, K.F. Chen, P.H. Chen,
C. Die z, F. Fio i, W.-S. Hou, Y. Hsiung, Y.F. Liu, R.-S. Lu, M. Mi˜nano Moya, E. Paganis,
A. Psallidas, J. . Tsai, Y.M. Tzeng
– 31 –

JHEP12(2016)013
Chulalongko n Uni e si y, Facul y o Science, Depa men o Physics, Bangkok,
Thailand
B. Asa apibhop, G. Singh, N. S imanobhas, N. Suwonjandee
Cuku o a Uni e si y, Adana, Tu key
A. Adiguzel, S. Ce ci50, S. Dama seckin, Z.S. Demi oglu, C. Dozen, I. Dumanoglu,
S. Gi gis, G. Gokbulu , Y. Gule , E. Gu pina , I. Hos, E.E. Kangal51, O. Ka a, A. Kayis
Topaksu, U. Kiminsu, M. Oglakci, G. Onengu 52, K. Ozdemi 53, D. Suna Ce ci50, B. Tali50,
S. Tu kcapa , I.S. Zo baki , C. Zo bilmez
Middle Eas Technical Uni e si y, Physics Depa men , Anka a, Tu key
B. Bilin, S. Bilmis, B. Isildak54, G. Ka apina 55, M. Yal ac, M. Zey ek
Bogazici Uni e si y, Is anbul, Tu key
E. G¨ulmez, M. Kaya56, O. Kaya57, E.A. Ye kin58, T. Ye kin59
Is anbul Technical Uni e si y, Is anbul, Tu key
A. Caki , K. Cankocak, S. Sen60
Ins i u e o Scin illa ion Ma e ials o Na ional Academy o Science o Uk aine,
Kha ko , Uk aine
B. G ynyo
Na ional Scien i ic Cen e , Kha ko Ins i u e o Physics and Technology,
Kha ko , Uk aine
L. Le chuk, P. So okin
Uni e si y o B is ol, B is ol, Uni ed Kingdom
R. Aggle on, F. Ball, L. Beck, J.J. B ooke, D. Bu ns, E. Clemen , D. Cussans, H. Flache ,
J. Golds ein, M. G imes, G.P. Hea h, H.F. Hea h, J. Jacob, L. K eczko, C. Lucas,
D.M. Newbold61, S. Pa ames a an, A. Poll, T. Sakuma, S. Sei El Nas -s o ey, D. Smi h,
V.J. Smi h
Ru he o d Apple on Labo a o y, Didco , Uni ed Kingdom
K.W. Bell, A. Belyae 62, C. B ew, R.M. B own, L. Calliga is, D. Cie i, D.J.A. Cocke ill,
J.A. Coughlan, K. Ha de , S. Ha pe , E. Olaiya, D. Pe y , C.H. Shephe d-Themis ocleous,
A. Thea, I.R. Tomalin, T. Williams
Impe ial College, London, Uni ed Kingdom
M. Babe , R. Bainb idge, O. Buchmulle , A. Bundock, D. Bu on, S. Casasso, M. Ci on,
D. Colling, L. Co pe, P. Dauncey, G. Da ies, A. De Wi , M. Della Neg a, P. Dunne,
A. Elwood, D. Fu yan, Y. Haddad, G. Hall, G. Iles, R. Lane, C. Lane , R. Lucas61,
L. Lyons, A.-M. Magnan, S. Malik, L. Mas olo enzo, J. Nash, A. Niki enko48, J. Pela,
B. Penning, M. Pesa esi, D.M. Raymond, A. Richa ds, A. Rose, C. Seez, A. Tappe ,
K. Uchida, M. Vazquez Acos a63, T. Vi dee14, S.C. Zenz
B unel Uni e si y, Uxb idge, Uni ed Kingdom
J.E. Cole, P.R. Hobson, A. Khan, P. Kybe d, D. Leslie, I.D. Reid, P. Symonds, L. Teodo -
escu, M. Tu ne
– 32 –
JHEP12(2016)013
Baylo Uni e si y, Waco, U.S.A.
A. Bo zou, K. Call, J. Di mann, K. Ha akeyama, H. Liu, N. Pas ika
The Uni e si y o Alabama, Tuscaloosa, U.S.A.
O. Cha a , S.I. Coope , C. Hende son, P. Rume io
Bos on Uni e si y, Bos on, U.S.A.
D. A ca o, A. A e isyan, T. Bose, D. Gas le , D. Rankin, C. Richa dson, J. Rohl , L. Sulak,
D. Zou
B own Uni e si y, P o idence, U.S.A.
G. Benelli, E. Be y, D. Cu s, A. Ga abedian, J. Hakala, U. Hein z, J.M. Hogan, O. Jesus,
E. Lai d, G. Landsbe g, Z. Mao, M. Na ain, S. Pipe o , S. Sagi , E. Spence , R. Sya i
Uni e si y o Cali o nia, Da is, Da is, U.S.A.
R. B eedon, G. B e o, D. Bu ns, M. Calde on De La Ba ca Sanchez, S. Chauhan,
M. Che ok, J. Conway, R. Conway, P.T. Cox, R. E bache , C. Flo es, G. Funk, M. Ga dne ,
W. Ko, R. Lande , C. Mclean, M. Mulhea n, D. Pelle , J. Pilo , F. Ricci-Tam, S. Shalhou ,
J. Smi h, M. Squi es, D. S olp, M. T ipa hi, S. Wilbu , R. Yohay
Uni e si y o Cali o nia, Los Angeles, U.S.A.
R. Cousins, P. E e ae s, A. Flo en , J. Hause , M. Igna enko, D. Sal zbe g, E. Takasugi,
V. Value , M. Webe
Uni e si y o Cali o nia, Ri e side, Ri e side, U.S.A.
K. Bu , R. Cla e, J. Ellison, J.W. Ga y, G. Hanson, J. Heilman, P. Jandi , E. Kennedy,
F. Lac oix, O.R. Long, M. Malbe i, M. Olmedo Neg e e, M.I. Pane a, A. Sh ini as, H. Wei,
S. Wimpenny, B. R. Ya es
Uni e si y o Cali o nia, San Diego, La Jolla, U.S.A.
J.G. B anson, G.B. Ce a i, S. Ci olin, M. De dzinski, R. Ge osa, A. Holzne , D. Klein,
V. K u elyo , J. Le s, I. Macneill, D. Oli i o, S. Padhi, M. Pie i, M. Sani, V. Sha ma,
S. Simon, M. Tadel, A. Va ak, S. Wasse baech64, C. Welke, J. Wood, F. W¨u hwein,
A. Yagil, G. Ze i Della Po a
Uni e si y o Cali o nia, San a Ba ba a, San a Ba ba a, U.S.A.
R. Bhanda i, J. B admille -Feld, C. Campagna i, A. Dishaw, V. Du a, K. Flowe s,
M. F anco Se illa, P. Ge e , C. Geo ge, F. Gol , L. Gouskos, J. G an, R. Helle ,
J. Incandela, N. Mccoll, S.D. Mullin, A. O cha o a, J. Richman, D. S ua , I. Sua ez,
C. Wes , J. Yoo
Cali o nia Ins i u e o Technology, Pasadena, U.S.A.
D. Ande son, A. Ap esyan, J. Benda id, A. Bo nheim, J. Bunn, Y. Chen, J. Dua e,
A. Mo , H.B. Newman, C. Pena, M. Spi opulu, J.R. Vliman , S. Xie, R.Y. Zhu
Ca negie Mellon Uni e si y, Pi sbu gh, U.S.A.
M.B. And ews, V. Azzolini, B. Ca lson, T. Fe guson, M. Paulini, J. Russ, M. Sun, H. Vogel,
I. Vo obie
– 33 –
JHEP12(2016)013
Uni e si y o Colo ado Boulde , Boulde , U.S.A.
J.P. Cumala , W.T. Fo d, F. Jensen, A. Johnson, M. K ohn, T. Mulholland, K. S enson,
S.R. Wagne
Co nell Uni e si y, I haca, U.S.A.
J. Alexande , J. Cha es, J. Chu, S. Di me , K. Mcde mo , N. Mi man, G. Nicolas
Kau man, J.R. Pa e son, A. Rinke icius, A. Ryd, L. Skinna i, L. So i, S.M. Tan, Z. Tao,
J. Thom, J. Tucke , P. Wi ich, M. Zien ek
Fai ield Uni e si y, Fai ield, U.S.A.
D. Winn
Fe mi Na ional Accele a o Labo a o y, Ba a ia, U.S.A.
S. Abdullin, M. Alb ow, G. Apollina i, S. Bane jee, L.A.T. Baue dick, A. Be e as,
J. Be yhill, P.C. Bha , G. Bolla, K. Bu ke , J.N. Bu le , H.W.K. Cheung, F. Chlebana,
S. Cihangi , M. C emonesi, V.D. El i a, I. Fisk, J. F eeman, E. Go schalk, L. G ay,
D. G een, S. G ¨unendahl, O. Gu sche, D. Ha e, R.M. Ha is, S. Hasegawa, J. Hi schaue ,
Z. Hu, B. Jaya ilaka, S. Jinda iani, M. Johnson, U. Joshi, B. Klima, B. K eis, S. Lammel,
J. Linac e, D. Lincoln, R. Lip on, T. Liu, R. Lopes De S´a, J. Lykken, K. Maeshima,
N. Magini, J.M. Ma a ino, S. Ma uyama, D. Mason, P. McB ide, P. Me kel, S. M enna,
S. Nahn, C. Newman-Holmes†, V. O’Dell, K. Ped o, O. P oko ye , G. Rakness, L. Ris o i,
E. Sex on-Kennedy, A. Soha, W.J. Spalding, L. Spiegel, S. S oyne , N. S obbe, L. Taylo ,
S. Tkaczyk, N.V. T an, L. Uplegge , E.W. Vaande ing, C. Ve nie i, M. Ve zocchi, R. Vidal,
M. Wang, H.A. Webe , A. Whi beck
Uni e si y o Flo ida, Gaines ille, U.S.A.
D. Acos a, P. A e y, P. Bo ignon, D. Bou ilko , A. B inke ho , A. Ca nes, M. Ca e ,
D. Cu y, S. Das, R.D. Field, I.K. Fu ic, J. Konigsbe g, A. Ko y o , P. Ma, K. Ma che ,
H. Mei, P. Mileno ic65, G. Mi selmakhe , D. Rank, L. Shchu ska, D. Spe ka, L. Thomas,
J. Wang, S. Wang, J. Yel on
Flo ida In e na ional Uni e si y, Miami, U.S.A.
S. Linn, P. Ma kowi z, G. Ma inez, J.L. Rod iguez
Flo ida S a e Uni e si y, Tallahassee, U.S.A.
A. Acke , J.R. Adams, T. Adams, A. Askew, S. Bein, B. Diamond, S. Hagopian,
V. Hagopian, K.F. Johnson, A. Kha iwada, H. P ospe , A. San a, M. Weinbe g
Flo ida Ins i u e o Technology, Melbou ne, U.S.A.
M.M. Baa mand, V. Bhopa ka , S. Cola anceschi66, M. Hohlmann, D. Noonan, T. Roy,
F. Yumice a
Uni e si y o Illinois a Chicago (UIC), Chicago, U.S.A.
M.R. Adams, L. Apanase ich, D. Be y, R.R. Be s, I. Bucinskai e, R. Ca anaugh,
O. E dokimo , L. Gau hie , C.E. Ge be , D.J. Ho man, P. Ku , C. O’B ien, I.D. Sando al
Gonzalez, P. Tu ne , N. Va elas, H. Wang, Z. Wu, M. Zaka ia, J. Zhang
– 34 –
JHEP12(2016)013
The Uni e si y o Iowa, Iowa Ci y, U.S.A.
B. Bilki67, W. Cla ida, K. Dilsiz, S. Du gu , R.P. Gand ajula, M. Hay my ado , V. Kh is-
enko, J.-P. Me lo, H. Me me kaya68, A. Mes i ish ili, A. Moelle , J. Nach man, H. Ogul,
Y. Onel, F. Ozok69, A. Penzo, C. Snyde , E. Ti as, J. We zel, K. Yi
Johns Hopkins Uni e si y, Bal imo e, U.S.A.
I. Ande son, B. Blumen eld, A. Coco os, N. Eminize , D. Fehling, L. Feng, A.V. G i san,
P. Maksimo ic, M. Oshe son, J. Roskes, U. Sa ica, M. Swa z, M. Xiao, Y. Xin, C. You
The Uni e si y o Kansas, Law ence, U.S.A.
A. Al-ba aineh, P. Ba inge , A. Bean, J. Bowen, C. B une , J. Cas le, R.P. Kenny III,
A. K opi ni skaya, D. Majumde , W. Mcb aye , M. Mu ay, S. Sande s, R. S inge ,
J.D. Tapia Takaki, Q. Wang
Kansas S a e Uni e si y, Manha an, U.S.A.
A. I ano , K. Kaadze, S. Khalil, M. Makouski, Y. Ma a in, A. Mohammadi, L.K. Saini,
N. Skhi ladze, S. Toda
Law ence Li e mo e Na ional Labo a o y, Li e mo e, U.S.A.
D. Lange, F. Rebassoo, D. W igh
Uni e si y o Ma yland, College Pa k, U.S.A.
C. Anelli, A. Baden, O. Ba on, A. Belloni, B. Cal e , S.C. Eno, C. Fe aioli, J.A. Gomez,
N.J. Hadley, S. Jabeen, R.G. Kellogg, T. Kolbe g, J. Kunkle, Y. Lu, A.C. Migne ey,
Y.H. Shin, A. Skuja, M.B. Tonjes, S.C. Tonwa
Massachuse s Ins i u e o Technology, Camb idge, U.S.A.
D. Abe c ombie, B. Allen, A. Apyan, R. Ba bie i, A. Ba y, R. Bi, K. Bie wagen, S. B and ,
W. Busza, I.A. Cali, Z. Demi agli, L. Di Ma eo, G. Gomez Ceballos, M. Goncha o ,
D. Hsu, Y. Iiyama, G.M. Innocen i, M. Klu e, D. Ko alskyi, K. K ajcza , Y.S. Lai,
Y.-J. Lee, A. Le in, P.D. Luckey, A.C. Ma ini, C. Mcginn, C. Mi ono , S. Na ayanan,
X. Niu, C. Paus, C. Roland, G. Roland, J. Sal eld-Nebgen, G.S.F. S ephans, K. Sumo ok,
K. Ta a , M. Va ma, D. Velicanu, J. Ve e ka, J. Wang, T.W. Wang, B. Wyslouch, M. Yang,
V. Zhuko a
Uni e si y o Minneso a, Minneapolis, U.S.A.
A.C. Ben enu i, R.M. Cha e jee, A. E ans, A. Finkel, A. Gude, P. Hansen, S. Kala u ,
S.C. Kao, Y. Kubo a, Z. Lesko, J. Mans, S. Nou bakhsh, N. Rucks uhl, R. Rusack,
N. Tambe, J. Tu kewi z
Uni e si y o Mississippi, Ox o d, U.S.A.
J.G. Acos a, S. Oli e os
Uni e si y o Neb aska-Lincoln, Lincoln, U.S.A.
E. A dee a, R. Ba ek, K. Bloom, S. Bose, D.R. Claes, A. Dominguez, C. Fangmeie ,
R. Gonzalez Sua ez, R. Kamalieddin, D. Knowl on, I. K a chenko, A. Mal a Rod igues,
F. Meie , J. Mon oy, J.E. Siado, G.R. Snow, B. S iege
– 35 –
JHEP12(2016)013
S a e Uni e si y o New Yo k a Bu alo, Bu alo, U.S.A.
M. Alya i, J. Dolen, J. Geo ge, A. Godshalk, C. Ha ing on, I. Iash ili, J. Kaisen,
A. Kha chila a, A. Kuma , A. Pa ke , S. Rappoccio, B. Roozbahani
No heas e n Uni e si y, Bos on, U.S.A.
G. Al e son, E. Ba be is, D. Baumga el, A. Ho iang ham, A. Massi oni, D.M. Mo se,
D. Nash, T. O imo o, R. Teixei a De Lima, D. T ocino, R.-J. Wang, D. Wood
No hwes e n Uni e si y, E ans on, U.S.A.
S. Bha acha ya, K.A. Hahn, A. Kubik, J.F. Low, N. Mucia, N. Odell, B. Pollack,
M.H. Schmi , K. Sung, M. T o a o, M. Velasco
Uni e si y o No e Dame, No e Dame, U.S.A.
N. De , M. Hild e h, K. Hu ado Anampa, C. Jessop, D.J. Ka mga d, N. Kellams,
K. Lannon, N. Ma inelli, F. Meng, C. Muelle , Y. Musienko36, M. Plane , A. Reins old,
R. Ruch i, G. Smi h, S. Ta oni, N. Valls, M. Wayne, M. Wol , A. Wooda d
The Ohio S a e Uni e si y, Columbus, U.S.A.
J. Alimena, L. An onelli, J. B inson, B. Bylsma, L.S. Du kin, S. Flowe s, B. F ancis,
A. Ha , C. Hill, R. Hughes, W. Ji, B. Liu, W. Luo, D. Puigh, B.L. Wine , H.W. Wulsin
P ince on Uni e si y, P ince on, U.S.A.
S. Coope s ein, O. D iga, P. Elme , J. Ha denb ook, P. Hebda, J. Luo, D. Ma low,
T. Med ede a, M. Mooney, J. Olsen, C. Palme , P. Pi ou´e, D. S ickland, C. Tully,
A. Zu anski
Uni e si y o Pue o Rico, Mayaguez, U.S.A.
S. Malik
Pu due Uni e si y, Wes La aye e, U.S.A.
A. Ba ke , V.E. Ba nes, D. Benede i, S. Folgue as, L. Gu ay, M.K. Jha, M. Jones,
A.W. Jung, K. Jung, D.H. Mille , N. Neumeis e , B.C. Radbu n-Smi h, X. Shi, J. Sun,
A. S ya ko skiy, F. Wang, W. Xie, L. Xu
Pu due Uni e si y Calume , Hammond, U.S.A.
N. Pa asha , J. S upak
Rice Uni e si y, Hous on, U.S.A.
A. Adai , B. Akgun, Z. Chen, K.M. Ecklund, F.J.M. Geu s, M. Guilbaud, W. Li,
B. Michlin, M. No hup, B.P. Padley, R. Redjimi, J. Robe s, J. Ro ie, Z. Tu, J. Zabel
Uni e si y o Roches e , Roches e , U.S.A.
B. Be cha , A. Bodek, P. de Ba ba o, R. Demina, Y. . Duh, T. Fe bel, M. Galan i,
A. Ga cia-Bellido, J. Han, O. Hind ichs, A. Khukhunaish ili, K.H. Lo, P. Tan, M. Ve ze i
Ru ge s, The S a e Uni e si y o New Je sey, Pisca away, U.S.A.
J.P. Chou, E. Con e as-Campana, Y. Ge sh ein, T.A. G´omez Espinosa, E. Halkiadakis,
M. Heindl, D. Hidas, E. Hughes, S. Kaplan, R. Kunnawalkam Elaya alli, S. Ky iacou,
– 36 –

JHEP12(2016)013
A. La h, K. Nash, H. Saka, S. Salu , S. Schne ze , D. She ield, S. Somalwa , R. S one,
S. Thomas, P. Thomassen, M. Walke
Uni e si y o Tennessee, Knox ille, U.S.A.
M. Foe s e , J. Heideman, G. Riley, K. Rose, S. Spanie , K. Thapa
Texas A&M Uni e si y, College S a ion, U.S.A.
O. Bouhali70, A. Celik, M. Dalchenko, M. De Ma ia, A. Delgado, S. Dildick, R. Eusebi,
J. Gilmo e, T. Huang, E. Juska, T. Kamon71, R. Muelle , Y. Pakho in, R. Pa el, A. Pe lo ,
L. Pe ni`e, D. Ra hjens, A. Rose, A. Sa ono , A. Ta a ino , K.A. Ulme
Texas Tech Uni e si y, Lubbock, U.S.A.
N. Akchu in, C. Cowden, J. Damgo , C. D agoiu, P.R. Dude o, J. Faulkne , S. Kuno i,
K. Lamichhane, S.W. Lee, T. Libei o, S. Undleeb, I. Voloboue , Z. Wang
Vande bil Uni e si y, Nash ille, U.S.A.
A.G. Delannoy, S. G eene, A. Gu ola, R. Janjam, W. Johns, C. Magui e, A. Melo, H. Ni,
P. Sheldon, S. Tuo, J. Velko ska, Q. Xu
Uni e si y o Vi ginia, Cha lo es ille, U.S.A.
M.W. A en on, P. Ba ia, B. Cox, J. Goodell, R. Hi osky, A. Ledo skoy, H. Li, C. Neu,
T. Sin hup asi h, X. Sun, Y. Wang, E. Wol e, F. Xia
Wayne S a e Uni e si y, De oi , U.S.A.
C. Cla ke, R. Ha , P.E. Ka chin, P. Lamichhane, J. S u dy
Uni e si y o Wisconsin - Madison, Madison, WI, U.S.A.
D.A. Belknap, S. Dasu, L. Dodd, S. Du ic, B. Gombe , M. G o he, M. He ndon, A. He ´e,
P. Klabbe s, A. Lana o, A. Le ine, K. Long, R. Lo eless, I. Ojal o, T. Pe y, G.A. Pie o,
G. Polese, T. Ruggles, A. Sa in, A. Sha ma, N. Smi h, W.H. Smi h, D. Taylo , N. Woods
†: Deceased
1: Also a Vienna Uni e si y o Technology, Vienna, Aus ia
2: Also a S a e Key Labo a o y o Nuclea Physics and Technology, Peking Uni e si y, Beijing,
China
3: Also a Ins i u Plu idisciplinai e Hube Cu ien, Uni e si ´e de S asbou g, Uni e si ´e de
Hau e Alsace Mulhouse, CNRS/IN2P3, S asbou g, F ance
4: Also a Uni e sidade Es adual de Campinas, Campinas, B azil
5: Also a Uni e si ´e Lib e de B uxelles, B uxelles, Belgium
6: Also a Deu sches Elek onen-Synch o on, Hambu g, Ge many
7: Also a Join Ins i u e o Nuclea Resea ch, Dubna, Russia
8: Also a Suez Uni e si y, Suez, Egyp
9: Now a B i ish Uni e si y in Egyp , Cai o, Egyp
10: Also a Ain Shams Uni e si y, Cai o, Egyp
11: Also a Cai o Uni e si y, Cai o, Egyp
12: Now a Helwan Uni e si y, Cai o, Egyp
13: Also a Uni e si ´e de Hau e Alsace, Mulhouse, F ance
14: Also a CERN, Eu opean O ganiza ion o Nuclea Resea ch, Gene a, Swi ze land
– 37 –
JHEP12(2016)013
15: Also a Skobel syn Ins i u e o Nuclea Physics, Lomonoso Moscow S a e Uni e si y,
Moscow, Russia
16: Also a Tbilisi S a e Uni e si y, Tbilisi, Geo gia
17: Also a RWTH Aachen Uni e si y, III. Physikalisches Ins i u A, Aachen, Ge many
18: Also a Uni e si y o Hambu g, Hambu g, Ge many
19: Also a B andenbu g Uni e si y o Technology, Co bus, Ge many
20: Also a Ins i u e o Nuclea Resea ch ATOMKI, Deb ecen, Hunga y
21: Also a MTA-ELTE Lend¨ule CMS Pa icle and Nuclea Physics G oup, E¨o ¨os Lo ´and
Uni e si y, Budapes , Hunga y
22: Also a Uni e si y o Deb ecen, Deb ecen, Hunga y
23: Also a Indian Ins i u e o Science Educa ion and Resea ch, Bhopal, India
24: Also a Ins i u e o Physics, Bhubaneswa , India
25: Also a Uni e si y o Vis a-Bha a i, San inike an, India
26: Also a Uni e si y o Ruhuna, Ma a a, S i Lanka
27: Also a Is ahan Uni e si y o Technology, Is ahan, I an
28: Also a Uni e si y o Teh an, Depa men o Enginee ing Science, Teh an, I an
29: Also a Plasma Physics Resea ch Cen e , Science and Resea ch B anch, Islamic Azad
Uni e si y, Teh an, I an
30: Also a Uni e si `a degli S udi di Siena, Siena, I aly
31: Also a Pu due Uni e si y, Wes La aye e, U.S.A.
32: Also a In e na ional Islamic Uni e si y o Malaysia, Kuala Lumpu , Malaysia
33: Also a Malaysian Nuclea Agency, MOSTI, Kajang, Malaysia
34: Also a Consejo Nacional de Ciencia y Tecnolog´ıa, Mexico ci y, Mexico
35: Also a Wa saw Uni e si y o Technology, Ins i u e o Elec onic Sys ems, Wa saw, Poland
36: Also a Ins i u e o Nuclea Resea ch, Moscow, Russia
37: Now a Na ional Resea ch Nuclea Uni e si y ’Moscow Enginee ing Physics Ins i u e’
(MEPhI), Moscow, Russia
38: Also a S . Pe e sbu g S a e Poly echnical Uni e si y, S . Pe e sbu g, Russia
39: Also a Uni e si y o Flo ida, Gaines ille, U.S.A.
40: Also a P.N. Lebede Physical Ins i u e, Moscow, Russia
41: Also a Cali o nia Ins i u e o Technology, Pasadena, U.S.A.
42: Also a Facul y o Physics, Uni e si y o Belg ade, Belg ade, Se bia
43: Also a INFN Sezione di Roma; Uni e si `a di Roma, Roma, I aly
44: Also a Na ional Technical Uni e si y o A hens, A hens, G eece
45: Also a Scuola No male e Sezione dell’INFN, Pisa, I aly
46: Also a Na ional and Kapodis ian Uni e si y o A hens, A hens, G eece
47: Also a Riga Technical Uni e si y, Riga, La ia
48: Also a Ins i u e o Theo e ical and Expe imen al Physics, Moscow, Russia
49: Also a Albe Eins ein Cen e o Fundamen al Physics, Be n, Swi ze land
50: Also a Adiyaman Uni e si y, Adiyaman, Tu key
51: Also a Me sin Uni e si y, Me sin, Tu key
52: Also a Cag Uni e si y, Me sin, Tu key
53: Also a Pi i Reis Uni e si y, Is anbul, Tu key
54: Also a Ozyegin Uni e si y, Is anbul, Tu key
55: Also a Izmi Ins i u e o Technology, Izmi , Tu key
56: Also a Ma ma a Uni e si y, Is anbul, Tu key
57: Also a Ka kas Uni e si y, Ka s, Tu key
58: Also a Is anbul Bilgi Uni e si y, Is anbul, Tu key
– 38 –
JHEP12(2016)013
59: Also a Yildiz Technical Uni e si y, Is anbul, Tu key
60: Also a Hace epe Uni e si y, Anka a, Tu key
61: Also a Ru he o d Apple on Labo a o y, Didco , Uni ed Kingdom
62: Also a School o Physics and As onomy, Uni e si y o Sou hamp on, Sou hamp on, Uni ed
Kingdom
63: Also a Ins i u o de As o ´ısica de Cana ias, La Laguna, Spain
64: Also a U ah Valley Uni e si y, O em, U.S.A.
65: Also a Uni e si y o Belg ade, Facul y o Physics and Vinca Ins i u e o Nuclea Sciences,
Belg ade, Se bia
66: Also a Facol `a Ingegne ia, Uni e si `a di Roma, Roma, I aly
67: Also a A gonne Na ional Labo a o y, A gonne, U.S.A.
68: Also a E zincan Uni e si y, E zincan, Tu key
69: Also a Mima Sinan Uni e si y, Is anbul, Is anbul, Tu key
70: Also a Texas A&M Uni e si y a Qa a , Doha, Qa a
71: Also a Kyungpook Na ional Uni e si y, Daegu, Ko ea
– 39 –