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SUMMARY:Statistical Search for High-Mass Dimuon Resonances using ATLAS Ope
 n Data
DTSTART;VALUE=DATE-TIME:20260820T214000Z
DTEND;VALUE=DATE-TIME:20260820T220000Z
DTSTAMP;VALUE=DATE-TIME:20260828T055244Z
UID:indico-contribution-1453@indico.uni.edu.pe
DESCRIPTION:Speakers: DAVID ALONSO LUZQUIÑOS SAAVEDRA (Pontificia Univers
 idad Católica del Perú)\nHeavy neutral gauge bosons (Z′) arise in well
 -motivated extensions of the Standard Model with additional U(1)′ symmet
 ries and are important targets for direct searches at hadron colliders [1]
 . Motivated by the ATLAS high-mass dilepton resonance search [2]\, we deve
 lop an independent analysis of the process pp → Z′ → μ+μ− using 
 ATLAS Run-2 Open Data.\n\nThe dimuon invariant mass is used as the main di
 scriminating observable after selecting high-momentum muons. The steeply f
 alling Standard Model background\, dominated by Drell–Yan production\, i
 s modeled with alternative analytic parameterizations. Their robustness is
  evaluated through nested-model comparisons\, spurious-signal studies\, an
 d signal-injection tests. Generic resonance hypotheses are then incorporat
 ed into a profile-likelihood framework\, following standard LHC statistica
 l methodology [3]\, to test the background-only hypothesis and estimate ex
 clusion sensitivity.\n\nThis work provides a reproducible framework for hi
 gh-mass resonance searches with public collider data and for model-indepen
 dent tests of spin-1 physics beyond the Standard Model.\n\n[1] P. Langacke
 r\, Rev. Mod. Phys. 81\, 1199 (2009).\n[2] ATLAS Collaboration\, Phys. Let
 t. B 796\, 68 (2019).\n[3] G. Cowan et al.\, Eur. Phys. J. C 71\, 1554 (20
 11).\n\nhttps://indico.uni.edu.pe/event/184/contributions/1453/
LOCATION:UNI\, Lima Perú Auditorio de la Facultad de Ciencias
URL:https://indico.uni.edu.pe/event/184/contributions/1453/
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