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Заглавие документа: | 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 |
Авторы: | Hrynevich, A. ATLAS Collaboration |
Тема: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
Дата публикации: | 2018 |
Издатель: | American Physical Society |
Библиографическое описание источника: | Phys Rev Lett 2018;121(21). |
Аннотация: | 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. |
URI документа: | https://elib.bsu.by/handle/123456789/259298 |
DOI документа: | 10.1103/PhysRevLett.121.212301 |
Scopus идентификатор документа: | 85057454413 |
Финансовая поддержка: | ST/H001158/1,ST/J004804/1,ST/J005533/1,ST/K001310/1,ST/K001329/1,ST/K003666/1,ST/L003449/1,ST/L005662/1,ST/L006162/1,ST/M006417/1,ST/N000234/1,ST/N000307/1,ST/N000420/1,ST/N000447/1,ST/P00265X/1; IN2P3-CNRS |
Располагается в коллекциях: | Статьи НИУ «Институт ядерных проблем» |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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212394903.pdf | 523,7 kB | Adobe PDF | Открыть |
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