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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

Publication ,  Journal Article
Aad, G; Abbott, B; Abbott, DC; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Adam, L ...
Published in: European Physical Journal C
March 1, 2022
Published version (DOI)

The energy response of the ATLAS calorimeter is measured for single charged pions with transverse momentum in the range 10 < pT< 300 GeV. The measurement is performed using 139 fb - 1 of LHC proton–proton collision data at s=13 TeV taken in Run 2 by the ATLAS detector. Charged pions originating from τ-lepton decays are used to provide a sample of high-pT 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 % across a large part of the pT spectrum in the central region and underestimated by ∼ 4 % in the endcaps in the ATLAS simulation. The uncertainties in the measurements are ≲ 1 % for 15 < pT< 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.

Duke Scholars

Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Mark C. Kruse
Author Mark C. Kruse Physics

Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-022-10117-2

EISSN

1434-6052

ISSN

1434-6044

Publication Date

March 1, 2022

Volume

82

Issue

3

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

APA
Chicago
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MLA
NLM
Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., … Arena, E. (2022). Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→ τ±(→ π±ντ) ντ events in Run 2 data. European Physical Journal C, 82(3). https://doi.org/10.1140/epjc/s10052-022-10117-2
Aad, G., B. Abbott, D. C. Abbott, A. A. Abud, K. Abeling, D. K. Abhayasinghe, S. H. Abidi, et al. “Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→ τ±(→ π±ντ) ντ events in Run 2 data.” European Physical Journal C 82, no. 3 (March 1, 2022). https://doi.org/10.1140/epjc/s10052-022-10117-2.
Aad G, Abbott B, Abbott DC, Abud AA, Abeling K, Abhayasinghe DK, et al. Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→ τ±(→ π±ντ) ντ events in Run 2 data. European Physical Journal C. 2022 Mar 1;82(3).
Aad, G., et al. “Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→ τ±(→ π±ντ) ντ events in Run 2 data.” European Physical Journal C, vol. 82, no. 3, Mar. 2022. Scopus, doi:10.1140/epjc/s10052-022-10117-2.
Aad G, Abbott B, Abbott DC, Abud AA, Abeling K, Abhayasinghe DK, Abidi SH, Aboulhorma A, Abramowicz H, Abreu H, Abulaiti Y, Hoffman ACA, Acharya BS, Achkar B, Adam L, Bourdarios CA, Adamczyk L, Adamek L, Addepalli SV, Adelman J, Adiguzel A, Adorni S, Adye T, Affolder AA, Afik Y, Agapopoulou C, Agaras MN, Agarwala J, Aggarwal A, Agheorghiesei C, Aguilar-Saavedra JA, Ahmad A, Ahmadov F, Ahmed WS, Ai X, Aielli G, Aizenberg I, Akatsuka S, Akbiyik M, Åkesson TPA, Akimov AV, Khoury KA, Alberghi GL, Albert J, Albicocco P, Verzini MJA, Alderweireldt S, Aleksa M, Aleksandrov IN, Alexa C, Alexopoulos T, Alfonsi A, Alfonsi F, Alhroob M, Ali B, Ali S, Aliev M, Alimonti G, Allaire C, Allbrooke BMM, Allport PP, Aloisio A, Alonso F, Alpigiani C, Camelia EA, Estevez MA, Alviggi MG, Coutinho YA, Ambler A, Ambroz L, Amelung C, Amidei D, Santos SPAD, Amoroso S, Amrouche CS, Anastopoulos C, Andari N, Andeen T, Anders JK, Andrean SY, Andreazza A, Angelidakis S, Angerami A, Anisenkov AV, Annovi A, Antel C, Anthony MT, Antipov E, Antonelli M, Antrim DJA, Anulli F, Aoki M, Pozo JAA, Aparo MA, Bella LA, Aranzabal N, Ferraz VA, Arcangeletti C, Arce ATH, Arena E. Measurement of the energy response of the ATLAS calorimeter to charged pions from W±→ τ±(→ π±ντ) ντ events in Run 2 data. European Physical Journal C. 2022 Mar 1;82(3).
Journal cover image

Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-022-10117-2

EISSN

1434-6052

ISSN

1434-6044

Publication Date

March 1, 2022

Volume

82

Issue

3

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics