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Article: Measurement of muon pairs produced via gamma gamma scattering in nonultraperipheral Pb plus Pb collisions at root s(NN)=5.02 TeV with the ATLAS detector

TitleMeasurement of muon pairs produced via gamma gamma scattering in nonultraperipheral Pb plus Pb collisions at root s(NN)=5.02 TeV with the ATLAS detector
Authors
Issue Date5-May-2023
PublisherAmerican Physical Society
Citation
Physical Review C, 2023, v. 107, n. 5, p. 1-42 How to Cite?
Abstract

Results of a measurement of dimuon photoproduction in nonultraperipheral Pb + Pb collisions at root sNN = 5.02 TeV are presented. The measurement uses ATLAS data from the 2015 and 2018 Pb + Pb data-taking periods at the LHC with an integrated luminosity of 1.94 nb-1. The gamma gamma -> mu+mu- pairs are identified via selections on pair momentum asymmetry and acoplanarity. Differential cross sections for dimuon production are measured in different centrality, average muon momentum, and pair rapidity intervals as functions of acoplanarity and k perpendicular to, the transverse momentum kick of one muon relative to the other. Measurements are also made as a function of the rapidity separation of the muons and the angle of the muon pair relative to the second-order event plane to test whether magnetic fields generated in the quark-gluon plasma affect the measured muons. A prior observation of a centrality-dependent broadening of the acoplanarity distribution is confirmed. Furthermore, the improved precision of the measurement reveals a depletion in the number of pairs having small acoplanarity or k perpendicular to values in more central collisions. The acoplanarity distributions in a given centrality interval are observed to vary with the mean pT of the muons in the pair, but the k perpendicular to distributions do not. Comparisons with recent theoretical predictions are made. The predicted trends associated with effects of magnetic fields on the dimuons are not observed.


Persistent Identifierhttp://hdl.handle.net/10722/337470
ISSN
2023 Impact Factor: 3.2
2023 SCImago Journal Rankings: 1.223
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorAad, G-
dc.contributor.authorAbbott, B-
dc.contributor.authorAbbott, DC-
dc.contributor.authorAbeling, K-
dc.contributor.authorAbidi, SH-
dc.contributor.authorAboulhorma, A-
dc.contributor.authorAbramowicz, H-
dc.contributor.authorAbreu, H-
dc.contributor.authorAbulaiti, Y-
dc.contributor.authorAbusleme, Hoffman AC-
dc.contributor.authorAcharya, BS-
dc.contributor.authorAchkar, B-
dc.contributor.authorAdam, L-
dc.contributor.authorAdam, Bourdarios C-
dc.contributor.authorAdamczyk, L-
dc.contributor.authorAdamek, L-
dc.contributor.authorAddepalli, SV-
dc.contributor.authorAdelman, J-
dc.contributor.authorAdiguzel, A-
dc.contributor.authorAdorni, S-
dc.contributor.authorAdye, T-
dc.contributor.authorAffolder, AA-
dc.contributor.authorAfik, Y-
dc.contributor.authorAgaras, MN-
dc.contributor.authorAgarwala, J-
dc.contributor.authorAggarwal, A-
dc.contributor.authorAgheorghiesei, C-
dc.contributor.authorAguilar-Saavedra, JA-
dc.contributor.authorAhmad, A-
dc.contributor.authorAhmadov, F-
dc.contributor.authorAhmed, WS-
dc.contributor.authorAi, X-
dc.contributor.authorAielli, G-
dc.contributor.authorAizenberg, I-
dc.contributor.authorAkbiyik, M-
dc.contributor.authorAkesson, TPA-
dc.contributor.authorAkimov, AV-
dc.contributor.authorAl, Khoury K-
dc.contributor.authorAlberghi, GL-
dc.contributor.authorAlbert, J-
dc.contributor.authorAlbicocco, P-
dc.contributor.authorAlconada, Verzini MJ-
dc.contributor.authorAlderweireldt, S-
dc.contributor.authorAleksa, M-
dc.contributor.authorAleksandrov, IN-
dc.contributor.authorAlexa, C-
dc.contributor.authorAlexopoulos, T-
dc.contributor.authorAlfonsi, A-
dc.contributor.authorAlfonsi, F-
dc.contributor.authorAlhroob, M-
dc.contributor.authorAli, B-
dc.contributor.authorAli, S-
dc.contributor.authorAliev, M-
dc.contributor.authorAlimonti, G-
dc.contributor.authorAllaire, C-
dc.contributor.authorTu, Yanjun-
dc.contributor.authorHuang, Shuhui-
dc.contributor.authorTam, Kai Chung-
dc.contributor.authorPeng, Chen-
dc.contributor.authorParedes Hernandez, Daniela Katherinne-
dc.contributor.authoret al-
dc.date.accessioned2024-03-11T10:21:08Z-
dc.date.available2024-03-11T10:21:08Z-
dc.date.issued2023-05-05-
dc.identifier.citationPhysical Review C, 2023, v. 107, n. 5, p. 1-42-
dc.identifier.issn2469-9985-
dc.identifier.urihttp://hdl.handle.net/10722/337470-
dc.description.abstract<p>Results of a measurement of dimuon photoproduction in nonultraperipheral Pb + Pb collisions at root sNN = 5.02 TeV are presented. The measurement uses ATLAS data from the 2015 and 2018 Pb + Pb data-taking periods at the LHC with an integrated luminosity of 1.94 nb-1. The gamma gamma -> mu+mu- pairs are identified via selections on pair momentum asymmetry and acoplanarity. Differential cross sections for dimuon production are measured in different centrality, average muon momentum, and pair rapidity intervals as functions of acoplanarity and k perpendicular to, the transverse momentum kick of one muon relative to the other. Measurements are also made as a function of the rapidity separation of the muons and the angle of the muon pair relative to the second-order event plane to test whether magnetic fields generated in the quark-gluon plasma affect the measured muons. A prior observation of a centrality-dependent broadening of the acoplanarity distribution is confirmed. Furthermore, the improved precision of the measurement reveals a depletion in the number of pairs having small acoplanarity or k perpendicular to values in more central collisions. The acoplanarity distributions in a given centrality interval are observed to vary with the mean pT of the muons in the pair, but the k perpendicular to distributions do not. Comparisons with recent theoretical predictions are made. The predicted trends associated with effects of magnetic fields on the dimuons are not observed.</p>-
dc.languageeng-
dc.publisherAmerican Physical Society-
dc.relation.ispartofPhysical Review C-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMeasurement of muon pairs produced via gamma gamma scattering in nonultraperipheral Pb plus Pb collisions at root s(NN)=5.02 TeV with the ATLAS detector-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevC.107.054907-
dc.identifier.scopuseid_2-s2.0-85166613350-
dc.identifier.volume107-
dc.identifier.issue5-
dc.identifier.spage1-
dc.identifier.epage42-
dc.identifier.eissn2469-9993-
dc.identifier.isiWOS:001021392200001-
dc.publisher.placeCOLLEGE PK-
dc.identifier.issnl2469-9985-

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