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Suppression of non-prompt J/psi, prompt J/psi, and Y(1S) in PbPb collisions at sqrt(sNN)=2.76 TeVстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Belyaev A., Boos E., Ershov A., Gribushin A., Kodolova O., Korotkikh V., Lokhtin I., Markina A., Obraztsov S., Perfilov M., Petrushanko S., Sarycheva L., Savrin V., Snigirev A., Vardanyan I., CMS Collaboration
- Журнал: Journal of High Energy Physics
- Том: 2012
- Номер: 5
- Год издания: 2012
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 63
- DOI: 10.1007/JHEP05(2012)063
- Аннотация: Yields of prompt and non-prompt J/psi, as well as Y(1S) mesons, are measured by the CMS experiment via their dimuon decays in PbPb and pp collisions at sqrt(sNN) = 2.76 TeV for quarkonium rapidity |y|<2.4. Differential cross sections and nuclear modification factors are reported as functions of y and transverse momentum pt, as well as collision centrality. For prompt J/psi with relatively high pt (6.5<pt<30 GeV/c), a strong, centrality-dependent suppression is observed in PbPb collisions, compared to the yield in pp collisions scaled by the number of inelastic nucleon-nucleon collisions. In the same kinematic range, a suppression of non-prompt J/psi, which is sensitive to the in-medium b-quark energy loss, is measured for the first time. Also the low-pt Y(1S) mesons are suppressed in PbPb collisions.
- Добавил в систему: Лохтин Игорь Петрович