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| CMS-BPH-11-011 ; CERN-PH-EP-2013-014 | ||
| Measurement of the X(3872) production cross section via decays to J/ψπ+π− in pp collisions at √s = 7 TeV | ||
| CMS Collaboration | ||
| 16 February 2013 | ||
| J. High Energy Phys. 04 (2013) 154 | ||
| Abstract: The production of the X(3872) is studied in pp collisions at √s = 7 TeV, 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 4.8 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 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. | ||
| Links: e-print arXiv:1302.3968 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; HepData record ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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