Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector

The jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton– proton data produced at a centre-of-mass energy of 8 TeV with an integrated luminosity of 20 fb−1. Jets are reconstructed from clusters of...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Física
Physics
Calorimeter
Nuclear physics
Transverse momentum
Relative energy
Atlas detector
Detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126819
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-126819
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Physics
Calorimeter
Nuclear physics
Transverse momentum
Relative energy
Atlas detector
Detector
spellingShingle Física
Physics
Calorimeter
Nuclear physics
Transverse momentum
Relative energy
Atlas detector
Detector
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector
topic_facet Física
Physics
Calorimeter
Nuclear physics
Transverse momentum
Relative energy
Atlas detector
Detector
description The jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton– proton data produced at a centre-of-mass energy of 8 TeV with an integrated luminosity of 20 fb−1. Jets are reconstructed from clusters of energy depositions in the ATLAS calorimeters using the anti-kt algorithm. A jet calibration scheme is applied in multiple steps, each addressing specific effects including mitigation of contributions from additional proton–proton collisions, loss of energy in dead material, calorimeter non-compensation, angular biases and other global jet effects. The final calibration step uses several in situ techniques and corrects for residual effects not captured by the initial calibration. These analyses measure both the jet energy scale and resolution by exploiting the transverse momentum balance in γ + jet, Z + jet, dijet, and multijet events. A statistical combination of these measurements is performed. In the central detector region, the derived calibration has a precision better than 1% for jets with transverse momentum 150 GeV < pT < 1500 GeV, and the relative energy resolution is (8.4 ± 0.6)% for pT = 100 GeV and (23 ± 2)% for pT = 20 GeV. The calibration scheme for jets with radius parameter R = 1.0, for which jets receive a dedicated calibration of the jet mass, is also discussed.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector
title_short Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector
title_full Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector
title_fullStr Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector
title_full_unstemmed Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector
title_sort determination of jet calibration and energy resolution in proton–proton collisions at √s=8tev using the atlas detector
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/126819
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