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Constraints on the initial state of Pb-Pb collisions via measurements of Z-boson yields and azimuthal anisotropy at sqrt(s[NN]) = 5.02 TeVстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 14 октября 2021 г.
- Авторы: Belyaev A.V., Boos E., Demiyanov A., Ershov A.A., Gribushin A., Katkov I., Kodolova O., Korotkikh V., Lokhtin I., Obraztsov S., Petrushanko S., Savrin V., Snigirev A., Vardanyan I., CMS Collaboration
- Журнал: Physical Review Letters
- Том: 127
- Номер: 10
- Год издания: 2021
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 102002
- DOI: 10.1103/physrevlett.127.102002
- Аннотация: The CMS experiment at the LHC has measured the differential cross sections of Zbosons decaying to pairs of leptons, as functions of transverse momentum and rapidity, in lead-lead collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measured Zboson elliptic azimuthal anisotropy coefficient is compatible with zero, showing that Zbosons do not experience significant final-state interactions in the medium produced in the collision. Yields of Zbosons are compared to Glauber model predictions and are found to deviate from these expectations in peripheral collisions, indicating the presence of initial collision geometry and centrality selection effects. The precision of the measurement allows, for the first time, for a data-driven determination of the nucleon-nucleon integrated luminosity as a function of lead-lead centrality, thereby eliminating the need for its estimation based on a Glauber model.
- Добавил в систему: Лохтин Игорь Петрович