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Precision calibration of calorimeter signals in the ATLAS experiment using an uncertainty-aware neural network

G. AadCentre de physique des particules de MarseilleErlend AakvaagUniversity of BergenBraden Keim AbbottUniversity of OklahomaSara AbdelhameedUniversity of OklahomaKira AbelingUniversity of GöttingenNils Julius AbichtTU Dortmund UniversityHaider AbidiBrookhaven National LaboratoryMohammed AboelelaBrookhaven National LaboratoryAsmaa AboulhormaMohammed V University in RabatH. AbramowiczMohammed V University in RabatY. AbulaitiNew York UniversityB. S. AcharyaUniversity College LondonAnke AckermannUniversity College LondonClaire Adam BourdariosHeidelberg UniversityL. AdamczykLaboratoire d’Annecy de Physique des ParticulesSagar AddepalliAGH University of Science and TechnologyMatt AddisonUniversity of ManchesterJahred AdelmanNorthern Illinois UniversityAytul AdiguzelNorthern Illinois UniversityTim AdyeIstanbul UniversityTony AffolderRutherford Appleton LaboratoryY. AfikUniversity of California, Santa CruzMerve Nazlim AgarasUniversity of ChicagoAnamika AggarwalBarcelona Institute for Science and TechnologyC. AgheorghieseiJohannes Gutenberg University of MainzF. AhmadovAzerbaijan National Academy of SciencesS. AhujaAzerbaijan National Academy of SciencesX. AiZhengzhou UniversityGiulio AielliINFN Sezione di Roma IIArya AikotUniversity of Rome Tor VergataMalak Ait TamlihatInstitute for Corpuscular PhysicsBrahim AitbenchikhUniversity of Hassan II CasablancaMelike AkbiyikJohannes Gutenberg University of MainzTorsten AkessonLund UniversityAndrei AkimovLund UniversityDaiya AkiyamaWaseda UniversityNilima Nilesh AkolkarWaseda UniversityS. AktasUniversity of BonnGian Luigi AlberghiINFN BolognaJ. AlbertINFN BolognaP. AlbicoccoUniversity of VictoriaGuillaume Lucas AlbouyINFN National Laboratory of FrascatiSara AlderweireldtUniversity of EdinburghZ. L. AlegriaUniversity of EdinburghMartin AleksaOklahoma State UniversityI. N. AleksandrovEuropean Organization for Nuclear ResearchC. AlexaHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringT. AlexopoulosHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringFabrizio AlfonsiINFN BolognaMalte AlgrenUniversity of GenevaMuhammad AlhroobUniversity of GenevaBabar AliCzech Technical University in PragueHanadi AliLancaster UniversityS. AliCalifornia State University, FresnoSamuel William AlibocusCalifornia State University, FresnoM. AlievUniversity of JohannesburgGianluca AlimontiINFN Sezione di MilanoWael AlkakhiINFN Sezione di MilanoCorentin AllaireUniversity of Paris-SaclayBenedict AllbrookeUniversity of Paris-SaclayJonny AllenUniversity of ManchesterJulia Frances AllenUniversity of EdinburghPhilip Patrick AllportUniversity of BirminghamA. AloisioUniversity of Naples Federico IIF. AlonsoUniversity of Naples Federico IICristiano AlpigianiUniversity of Washington Applied Physics LaboratoryZainab Mohammad K AlsolamiUniversity of Washington Applied Physics LaboratoryAdrian Alvarez FernandezJohannes Gutenberg University of MainzMario Alves CardosoJohannes Gutenberg University of MainzMariagrazia AlviggiUniversity of Naples Federico IIM. AlyINFN NapoliY. Amaral CoutinhoUniversidade Federal do Rio de JaneiroAlessandro AmblerUniversidade Federal do Rio de JaneiroChristoph AmelungEuropean Organization for Nuclear ResearchChristoph AmesLudwig Maximilian University of MunichDante AmideiUniversity of Michigan–Ann ArborBaktash AminiUniversity of Michigan–Ann ArborKyle AmirieUniversity of FreiburgArtem AmirkhanovUniversity of TorontoS. P. Amor Dos SantosLaboratory of Instrumentation and Experimental Particles PhysicsK. R. AmosLaboratory of Instrumentation and Experimental Particles PhysicsDimitra AmperiadouAristotle University of ThessalonikiViktor AnanievUniversity of OsloChristos AnastopoulosUniversity of SheffieldT. AndeenThe University of Texas at AustinJohn Kenneth AndersUniversity of LiverpoolAdam Campbell AndersonUniversity of LiverpoolA. AndreazzaINFN Sezione di MilanoStylianos AngelidakisNational and Kapodistrian University of AthensAaron AngeramiColumbia UniversityAlexey AnisenkovColumbia UniversityAlberto AnnoviINFN Sezione di PisaC. AntelUniversity of GenevaEgor AntipovUniversity of GenevaMario AntonelliINFN National Laboratory of FrascatiFabio AnulliINFN Sezione di Roma IMasato AokiINFN Sezione di Roma ITakumi AokiUniversity of Tokyo
SciPost Physicsjournal2025en
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Annotatsiya

The ATLAS experiment at the Large Hadron Collider explores the use of modern neural networks for a multi-dimensional calibration of its calorimeter signal defined by clusters of topologically connected cells (topo-clusters). The Bayesian neural network (BNN) approach not only yields a continuous and smooth calibration function that improves performance relative to the standard calibration but also provides uncertainties on the calibrated energies for each topo-cluster. The results obtained by using a trained BNN are compared to the standard local hadronic calibration and to a calibration provided by training a deep neural network. The uncertainties predicted by the BNN are interpreted in the context of a fractional contribution to the systematic uncertainties of the trained calibration. They are also compared to uncertainty predictions obtained from an alternative estimator employing repulsive ensembles.

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