Measurement of the X(3872) production cross section via decays to J/ψπ+π in pp collisions at √s = 7 TeV

The CMS collaboration

研究成果: 雜誌貢獻期刊論文同行評審

75 引文 斯高帕斯(Scopus)

摘要

The production of the X(3872) is studied in pp collisions at √s = 7TeV, using decays to J/ψπ+π, where the J/ψ decays to two muons. The data were recorded by the CMS experiment and correspond to an integrated luminosity of 4.8fb−1. The measurements are performed in a kinematic range in which the X(3872) candidates have a transverse momentum 10 < pT < 50GeV and rapidity |y| < 1.2. The ratio of the X(3872) and ψ (2S) cross sections times their branching fractions into J/ψπ+π 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 π+π mass spectrum of the J/ψπ+π system in the X(3872) decays is also investigated.

原文???core.languages.en_GB???
文章編號154
期刊Journal of High Energy Physics
2013
發行號4
DOIs
出版狀態已出版 - 29 4月 2013

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