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Abstract:

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.

Registro:

Documento: Artículo
Título: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
Autor:Aaboud, M. et al.
Este artículo contiene 2917 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2917 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave: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
Año:2018
Volumen:121
Número:21
DOI: http://dx.doi.org/10.1103/PhysRevLett.121.212301
Título revista:Physical Review Letters
Título revista abreviado:Phys Rev Lett
ISSN:00319007
CODEN:PRLTA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v121_n21_p_Aaboud

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Citas:

---------- APA ----------
(2018) . 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. Physical Review Letters, 121(21).
http://dx.doi.org/10.1103/PhysRevLett.121.212301
---------- CHICAGO ----------
Aaboud, M. "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" . Physical Review Letters 121, no. 21 (2018).
http://dx.doi.org/10.1103/PhysRevLett.121.212301
---------- MLA ----------
Aaboud, M. "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" . Physical Review Letters, vol. 121, no. 21, 2018.
http://dx.doi.org/10.1103/PhysRevLett.121.212301
---------- VANCOUVER ----------
Aaboud, M. 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. Phys Rev Lett. 2018;121(21).
http://dx.doi.org/10.1103/PhysRevLett.121.212301