Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb+Pb Collisions at sNN =5.02 TeV with the ATLAS Detector

This Letter presents a measurement of γγ→μ+μ- production in Pb+Pb collisions recorded by the ATLAS detector at the Large Hadron Collider at sNN=5.02 TeV with an integrated luminosity of 0.49 nb-1. The azimuthal angle and transverse momentum correlations between the muons are measured as a function o...

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Guardado en:
Detalles Bibliográficos
Publicado: 2018
Materias:
Charged particles
Electromagnetic fields
Photons
Tellurium compounds
Angular correlations
ATLAS detectors
Azimuthal angle
Integrated luminosity
Large Hadron Collider
Measurements of
Transverse momenta
Two-photon scattering
Lead compounds
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v121_n21_p_Aaboud
http://hdl.handle.net/20.500.12110/paper_00319007_v121_n21_p_Aaboud
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00319007_v121_n21_p_Aaboud
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spelling paper:paper_00319007_v121_n21_p_Aaboud2025-07-30T17:39:22Z Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb+Pb Collisions at sNN =5.02 TeV with the ATLAS Detector Charged particles Electromagnetic fields Photons Tellurium compounds Angular correlations ATLAS detectors Azimuthal angle Integrated luminosity Large Hadron Collider Measurements of Transverse momenta Two-photon scattering Lead compounds This Letter presents a measurement of γγ→μ+μ- production in Pb+Pb collisions recorded by the ATLAS detector at the Large Hadron Collider at sNN=5.02 TeV with an integrated luminosity of 0.49 nb-1. The azimuthal angle and transverse momentum correlations between the muons are measured as a function of collision centrality. The muon pairs are produced from γγ through the interaction of the large electromagnetic fields of the nuclei. The contribution from background sources of muon pairs is removed using a template fit method. In peripheral collisions, the muons exhibit a strong back-to-back correlation consistent with previous measurements of muon pair production in ultraperipheral collisions. The angular correlations are observed to broaden significantly in central collisions. The modifications are qualitatively consistent with rescattering of the muons while passing through the hot matter produced in the collision. © 2018 CERN. for the ATLAS Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v121_n21_p_Aaboud http://hdl.handle.net/20.500.12110/paper_00319007_v121_n21_p_Aaboud
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Charged particles
Electromagnetic fields
Photons
Tellurium compounds
Angular correlations
ATLAS detectors
Azimuthal angle
Integrated luminosity
Large Hadron Collider
Measurements of
Transverse momenta
Two-photon scattering
Lead compounds
spellingShingle Charged particles
Electromagnetic fields
Photons
Tellurium compounds
Angular correlations
ATLAS detectors
Azimuthal angle
Integrated luminosity
Large Hadron Collider
Measurements of
Transverse momenta
Two-photon scattering
Lead compounds
Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb+Pb Collisions at sNN =5.02 TeV with the ATLAS Detector
topic_facet Charged particles
Electromagnetic fields
Photons
Tellurium compounds
Angular correlations
ATLAS detectors
Azimuthal angle
Integrated luminosity
Large Hadron Collider
Measurements of
Transverse momenta
Two-photon scattering
Lead compounds
description This Letter presents a measurement of γγ→μ+μ- production in Pb+Pb collisions recorded by the ATLAS detector at the Large Hadron Collider at sNN=5.02 TeV with an integrated luminosity of 0.49 nb-1. The azimuthal angle and transverse momentum correlations between the muons are measured as a function of collision centrality. The muon pairs are produced from γγ through the interaction of the large electromagnetic fields of the nuclei. The contribution from background sources of muon pairs is removed using a template fit method. In peripheral collisions, the muons exhibit a strong back-to-back correlation consistent with previous measurements of muon pair production in ultraperipheral collisions. The angular correlations are observed to broaden significantly in central collisions. The modifications are qualitatively consistent with rescattering of the muons while passing through the hot matter produced in the collision. © 2018 CERN. for the ATLAS Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
title Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb+Pb Collisions at sNN =5.02 TeV with the ATLAS Detector
title_short Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb+Pb Collisions at sNN =5.02 TeV with the ATLAS Detector
title_full Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb+Pb Collisions at sNN =5.02 TeV with the ATLAS Detector
title_fullStr Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb+Pb Collisions at sNN =5.02 TeV with the ATLAS Detector
title_full_unstemmed Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb+Pb Collisions at sNN =5.02 TeV with the ATLAS Detector
title_sort observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in pb+pb collisions at snn =5.02 tev with the atlas detector
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v121_n21_p_Aaboud
http://hdl.handle.net/20.500.12110/paper_00319007_v121_n21_p_Aaboud
_version_ 1840323450406699008

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