Measurement of the energy response of the ATLAS calorimeter to charged pions from W.sup.±./sup.→ τ.sup.±./sup.(→ π.sup.±./sup.ν.sub.τ./sub.) ν.sub.τ./sub. events in Run 2 data

0565759 - FZÚ 2023 RIV DE eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2892 authors
Measurement of the energy response of the ATLAS calorimeter to charged pions from W^±→ τ^±(→ π^±ν_τ) ν_τ events in Run 2 data.
European Physical Journal C. Roč. 82, č. 3 (2022), č. článku 223. ISSN 1434-6044. E-ISSN 1434-6052
Research Infrastructure: CERN-CZ II - 90104; e-INFRA CZ - 90140
Institutional support: RVO:68378271
Keywords : ATLAS * central region * CERN LHC Coll * transverse momentum
OECD category: Particles and field physics
Impact factor: 4.4, year: 2022
Method of publishing: Open access

The energy response of the ATLAS calorimeter is measured for single charged pions with transverse momentum in the range 10<pT<30010<pT​<300 GeV. The measurement is performed using 139 fb−1fb−1 of LHC proton–proton collision data at s=13s ​=13 TeV taken in Run 2 by the ATLAS detector. Charged pions originating from ττ-lepton decays are used to provide a sample of high-pTpT​ 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 ∼2%∼2% across a large part of the pTpT​ spectrum in the central region and underestimated by ∼4%∼4% in the endcaps in the ATLAS simulation.
Permanent Link: https://hdl.handle.net/11104/0337274