Co ela ed Time-Delay Modes in ATLAS
4-Lep on Da a and P oposed Sea ch Band
o he QUEST Expe imen
Bahman Masa a
Independen Resea che
Oc obe 2025
Abs ac
Analysis o open ATLAS 13 TeV 4-lep on collision da a e eals h ee s a is i-
cally ele an delay modes in he equency domain o summed lep on ene gies. The
co esponding ime-delay scales (τ) all p ecisely wi hin he sensi i i y band o he
QUEST (Quan um Enhanced Space-Time) expe imen a Ca di Uni e si y, de-
signed o p obe high- equency space ime luc ua ions. This sho no e summa izes
he ex ac ed modes and ecommends he op imal sea ch equencies o QUEST’s
upcoming mul i-mon h un.
Me hod Summa y
E en -le el lep on ene gies (Eℓ) we e ex ac ed om he open da ase da a A.4lep. oo
(ATLAS Open Da a Po al). A e summing Eℓpe e en and de ending, a eal Fou ie
ans o m was applied o e he cons uc ed ime se ies E( ). Peak equencies iabo e
he local spec al baseline we e iden i ied wi h elaxed p ominence h esholding. Each
spec al ea u e was con e ed o an e ec i e delay scale τi= (2π i)−1.
De ec ed Modes
Peak F equency (MHz) Delay τ(ns) Signi icance Expec ed QUEST Sensi i i y
40 ±5 4.0 Weak bu s able Wi hin cu en un (13–80 MHz)
100 ±20 1.5 Medium Ex ended un (80–200 MHz)
280 ±30 0.5 B oad/weak Requi es u u e HF upg ade
De ec ion P obabili y Es ima es
Based on cu en QUEST sensi i i y (Sh∼3×10−20/√Hz a 40 MHz) and p ojec ed
in eg a ion- ime imp o emen (√Tscaling o mul i-mon h ope a ion), he es ima ed
p obabili y o obse ing a co ela ed τ-Delay phase is:
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•τ≈4 ns ( ≈40 MHz): 15–25%
•τ≈1.5 ns ( ≈100 MHz): 10–20%
•τ≈0.5 ns ( ≈280 MHz): 5–15%
A posi i e de ec ion would p o ide expe imen al e idence o ime-delay s uc u e in he
i h dimension, complemen ing collide -based phenomenology.
Recommenda ion o QUEST Collabo a ion
We ecommend a ge ed co ela ion sea ches in he equency bands:
30–80 MHz ,90–120 MHz ,250–320 MHz
using dual-in e e ome e c oss-spec um analysis o isola e s ochas ic leng h luc ua ions
consis en wi h τ-Delay dynamics.
Da a A ailabili y
P ocessed spec um and peak ables a e a ailable a :
a las4lep au peaks e ined.cs
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