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Measurement of the X(3872) production cross section via decays to J/psi pi+ pi- in pp collisions at sqrt(s) = 7 TeVстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Авторы: Belyaev A., Boos E., Dubinin M., Dudko L., Ershov A., Gribushin A., Katkov I., Klyukhin V., Kodolova O., Lokhtin I., Markina A., Obraztsov S., Perfilov M., Petrushanko S., Popov A.A., Sarycheva L., Savrin V., Snigirev A., CMS Collaboration
- Журнал: Journal of High Energy Physics
- Том: 2013
- Номер: 4
- Год издания: 2013
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 154
- DOI: 10.1007/JHEP04(2013)154
- Аннотация: The production of the X(3872) is studied in pp collisions at sqrt(s) = 7 TeV, using decays to J/psi pi pi, where the J/psi decays to two muons. The data were recorded by the CMS experiment and correspond to an integrated luminosity of 4.8 inverse femtobarns. The measurements are performed in a kinematic range in which the X(3872) candidates have a transverse momentum 10 < pt < 50 GeV and rapidity abs(y) < 1.2. The ratio of the X(3872) and psi(2S) cross sections times their branching fractions into J/psi pi pi is measured as a function of pt. In addition, the fraction of X(3872) originating from B decays is determined. From these measurements the prompt X(3872) differential cross section times branching fraction as a function of pt is extracted. The pi pi mass spectrum of the J/psi pi pi system in the X(3872) decays is also investigated.
- Добавил в систему: Лохтин Игорь Петрович