The UHE neu ino KM3-230213A
XXI Wo kshop on Neu ino Telescopes
Pado a, Sep embe 29 h – Oc obe 3 d 2025
Luigi An onio Fusco
[email p o ec ed]
Uni e si `a degli S udi di Sale no,
INFN-NA G uppo collega o di Sale no
Ou line
1. The KM3NeT de ec o s
2. The e en
3. The global landscape
The UHE neu ino KM3-230213A 2/25
The KM3NeT de ec o s
Unde wa e neu ino elescope
in he Medi e anean Sea
•KM3NeT/ARCA: neu ino
as onomy
•KM3NeT/ORCA: neu ino
oscilla ions
•Same collabo a ion, same
echnology
Fo mo e de ails on KM3NeT, check ou he alks in he pa allel and plena y sessions
The UHE neu ino KM3-230213A 3/25
The KM3NeT echnology
The UHE neu ino KM3-230213A 4/25
Cu en s a us
ARCA-51 oo p in ORCA-28 oo p in
The UHE neu ino KM3-230213A 5/25
KM3-230213A1
1S.Aiello e al. [KM3NeT], Na u e 638: 376-382 (2025)
The UHE neu ino KM3-230213A 6/25
The UHE neu ino KM3-230213A 7/25
Fi s obse a ion
•A ack-like e en
•B igh es aamong 108e en s
collec ed in he 21-line ARCA
con igu a ion
•Ve y ho izon al
•Ex emely high-quali y
econs uc ion
aIn e ms o numbe o igge ed
PMTs. Also, highes -ene gy e en om
likelihood econs uc ion
The UHE neu ino KM3-230213A 8/25
The UHE neu ino KM3-230213A 9/25
The neu ino lux
•Conside ing he cen al 90% E−2ene gy ange [72 PeV-2.6 EeV]
•Assuming a s eady iso opic lux
•Assuming E−2o e his ene gy ange
⇒E2Φ(E) = 5.8+10.1
−3.7×10−8GeV (cm2s s )−1
p oduces 1 e en in he conside ed da a
•Unce ain ies acco ding o Feldman&Cousins
The UHE neu ino KM3-230213A 16/25
KM3NeT alone
S.Aiello e al. [KM3NeT], Na u e 638: 376-382 (2025)
The UHE neu ino KM3-230213A 17/25
KM3NeT + IceCube + Auge
O.Ad iani e al. [KM3NeT], PRX 15: 031016 (2025)
The UHE neu ino KM3-230213A 18/25
Cosmogenic o igin
•In es iga ed a cosmogenic
o igin
•Di e en sou ce e olu ion
•Di e en zmax
•Also: subdominan p
popula ion in UHECR would
boos he neu ino lux a he
EeV scale
O.Ad iani e al. [KM3NeT], APJ 984: L41
(2025)
The UHE neu ino KM3-230213A 19/25
Is he e any hing in ha di ec ion?
The UHE neu ino KM3-230213A 20/25
(no ) Galac ic o igin
O.Ad iani e al. [KM3NeT], a Xi :2502.08387
The UHE neu ino KM3-230213A 21/25
Blaza s
O.Ad iani e al. [KM3NeT], a Xi :2502.08484
The UHE neu ino KM3-230213A 22/25
Blaza s
•No conclusi e s a emen gi en
he la ge R(99%)
•Majo adio la e om PMN
J0606-0724
•Gamma- ay la e o he sou ce
0605-085
•X- ay ac i i y o MRC
0614-083
The UHE neu ino KM3-230213A 23/25
Wha ’s nex
•Di use lux om ansien s (GRB1, blaza s) also in es iga ed
•Beyond S anda d Model op ions (e.g. hea y Da k Ma e , P imo dial Black Hole
e apo a ion) and s udy on Lo en z In a iance Viola ion2
•B oade ex emely-high-ene gy sea ches, also joining wi h IceCube and Auge
•Upda es on he e en p ope ies: new de ec o calib a ion, ene gy es ima ion, au
o igin
Huge esonance om bo h he expe imen al (many u he ollowups om mul imessenge
obse a o ies) and heo e ical/phenomenological poin o iew
1O.Ad iani e al. [KM3NeT], a Xi :2509.14895
2O.Ad iani e al. [KM3NeT], a Xi :2502.12070, in publica ion on Communica ion Physics
The UHE neu ino KM3-230213A 24/25
KM3NeT@Neu el
•L.A. Fusco, Obse a ion o he ul a-high-ene gy neu ino e en KM3-230213A, Tue a e noon
•R. Mulle , Sea ch o cosmic neu ino sou ces wi h wo yea s o KM3NeT/ARCA da a, Tue a e noon
•R. Cla k, Dynamic posi ioning and o ien a ion calib a ions o he KM3NeT/ORCA de ec o , Wed
mo ning
•F. Ben ena i Gualandi, The da a acquisi ion sys em o Phase-2 o he KM3NeT/ARCA neu ino
elescope, Wed mo ning
•I. Rea, The KM3NeT Digi al Op ical Module: a mul i-PMT app oach, Thu mo ning
•M. Benhassi, P ospec s o neu ino obse a ions o he Cen al Molecula Zone and Cygnus Cocoon,
Thu mo ning
•A. Lazo Ped ajas, S a us and esul s o he KM3NeT/ORCA expe imen , Thu a e noon
•A. Ma inelli, S a us and esul s o he KM3NeT/ARCA expe imen , F i mo ning
The UHE neu ino KM3-230213A 25/25
