Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→τ±(→π±ντ)ντ  events in Run 2 data

J. R. Bensinger; C. Blocker; G. Sciolla; ATLAS Collaboration

doi:10.1140/epjc/s10052-022-10117-2

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Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→τ±(→π±ντ)ντ events in Run 2 data

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Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→τ±(→π±ντ)ντ events in Run 2 data

J. R. Bensinger, C. Blocker, G. Sciolla and ATLAS Collaboration

The European physical journal. C, Particles and fields, Vol.82(3)

03/01/2022

DOI: https://doi.org/10.1140/epjc/s10052-022-10117-2

Abstract

Physics, Particles & Fields

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The energy response of the ATLAS calorimeter is measured for single charged pions with transverse momentum in the range 10<p(T) < 300 GeV. The measurement is performed using 139 fb(-1) of LHC proton-proton collision data at root s =13 TeV taken in Run 2 by the ATLAS detector. Charged pions originating from tau-lepton decays are used to provide a sample of high-p(T) isolated particles, where the composition is known, to test an energy regime that has not previously been probed by in situ single-particle measurements. The calorimeter response to single-pions is observed to be overestimated by similar to 2% across a large part of the p(T) spectrum in the central region and underestimated by similar to 4% in the endcaps in the ATLAS simulation. The uncertainties in the measurements are less than or similar to 1% for 15<p(T) <185 GeV in the central region. To investigate the source of the discrepancies, the width of the distribution of the ratio of calorimeter energy to track momentum, the energies per layer and response in the hadronic calorimeter are also compared between data and simulation.

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Title: Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→τ±(→π±ντ)ντ events in Run 2 data
Creators: J. R. Bensinger - Brandeis University
C. Blocker - Brandeis University
G. Sciolla - Brandeis University
ATLAS Collaboration
Publication Details: The European physical journal. C, Particles and fields, Vol.82(3)
Publisher: Springer Nature
Number of pages: 31
Grant note: MSSR, Slovakia ANR, France; French National Research Agency (ANR) ANAS, Azerbaijan; Azerbaijan National Academy of Sciences (ANAS) FWF, Austria; Austrian Science Fund (FWF) NAWA, Poland; Polish National Agency for Academic Exchange (NAWA) GSRI, Greece Benoziyo Center, Israel CAS, China; Chinese Academy of Sciences Wallenberg Foundation, Sweden VSC CR, Czech Republic; Czech Republic Government NRC, Canada IN2P3-CNRS, France; Centre National de la Recherche Scientifique (CNRS) Compute Canada, Canada Investissements d'Avenir Idex, France; French National Research Agency (ANR) MOST, China; Ministry of Science and Technology, China RCN, Norway RGC, China JINR ANPCyT, Argentina; ANPCyT BMWFW, Austria TAEK, Turkey; Ministry of Energy & Natural Resources - Turkey SNSF, Switzerland; Swiss National Science Foundation (SNSF) MESTD, Serbia; Ministry of Education, Science & Technological Development, Serbia CNPq, Brazil; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) SRC, Sweden ARRS, Slovenia; Slovenian Research Agency - Slovenia Aristeia programme La Caixa Banking Foundation, Spain MEiN, Poland NSERC, Canada; Natural Sciences and Engineering Research Council of Canada (NSERC) MIZS, Slovenia Canton of Bern, Switzerland MPG, Germany; Max Planck Society Herakleitos programme BSF-NSF, Israel GIF, Israel; German-Israeli Foundation for Scientific Research and Development Investissements d'Avenir Labex, France; French National Research Agency (ANR) SSTC, Belarus NCN, Poland MEXT, Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) DSI/NRF, South Africa NSFC, China; National Natural Science Foundation of China (NSFC) CERN JSPS, Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science CEA-DRF/IRFU, France EU-ESF, Greece Hong Kong SAR, China INFN, Italy; Istituto Nazionale di Fisica Nucleare (INFN) ERC, European Union; European Research Council (ERC) ERDF, European Union COST, European Union MSMT CR, Czech Republic; Ministry of Education, Youth & Sports - Czech Republic; Czech Republic Government BMBF, Germany; Federal Ministry of Education & Research (BMBF) BCKDF, Canada DFG, Germany; German Research Foundation (DFG) NSF, United States of America; National Science Foundation (NSF) Norwegian Financial Mechanism 2014-2021, Norway NRCKI, Russian Federation; Russian Federation Goran Gustafssons Stiftelse, Sweden FAPESP, Brazil; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) MPOCR, Czech Republic; Czech Republic Government FCT, Portugal; Portuguese Foundation for Science and Technology; European Commission MNE/IFA, Romania MES of Russia, Russian Federation; Russian Federation DNSRC, Denmark; Danish Natural Science Research Council Greek NSRF, Greece Canton of Geneva, Switzerland STFC, United Kingdom; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) CFI, Canada; Canada Foundation for Innovation ISF, Israel; Israel Science Foundation CERCA Programme Generalitat de Catalunya, Spain AvH Foundation, Germany; Alexander von Humboldt Foundation NWO, Netherlands; Netherlands Organization for Scientific Research (NWO); Netherlands Government MICINN, Spain; Spanish Government DNRF, Denmark SRNSFG, Georgia ARC, Australia; Australian Research Council CRC, Canada ANID, Chile Royal Society, United Kingdom; Royal Society of London HGF, Germany YerPhI, Armenia MOST, Taiwan; Ministry of Science and Technology, Taiwan Thales programme; Thales Group CNRST, Morocco Minciencias, Colombia SERI, Switzerland PROMETEO Programme Generalitat Valenciana, Spain CANARIE, Canada Leverhulme Trust, United Kingdom; Leverhulme Trust Horizon 2020, European Union GenT Programme Generalitat Valenciana, Spain DOE, United States of America; United States Department of Energy (DOE)
Identifiers: 9924151070001921
Academic Unit: Martin A. Fisher School of Physics
Language: English
Resource Type: Journal article

Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→τ±(→π±ντ)ντ events in Run 2 data

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