Measurement of the ratio of the production cross sections times branching fractions of Bc±→ J/ψπ± and B± → J/ψK± and (Formula presented.) in pp collisions at (Formula presented.) TeV
Journal of High Energy Physics, vol.2015, no.1, 2015 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 2015 Issue: 1
- Publication Date: 2015
- Doi Number: 10.1007/jhep01(2015)063
- Journal Name: Journal of High Energy Physics
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Keywords: Hadron-Hadron Scattering, Branching fraction, B physics, SIMULATION, GENERATOR, BCVEGPY
- Open Archive Collection: AVESIS Open Access Collection
- Anadolu University Affiliated: No
Abstract
© 2015, The Author(s).The ratio of the production cross sections times branching fractions (Formula presented.)(Formula presented.) is studied in proton-proton collisions at a center-of-mass energy of 7 TeV with the CMS detector at the LHC. The kinematic region investigated requires Bc± and B± mesons with transverse momentum pT > 15 GeV and rapidity |y| < 1.6. The data sample corresponds to an integrated luminosity of 5.1 fb−1. The ratio is determined to be (Formula presented.)(Formula presented.). The Bc± → J/ψπ±π±π∓ decay is also observed in the same data sample. Using a model-independent method developed to measure the efficiency given the presence of resonant behaviour in the three-pion system, the ratio of the branching fractions (Formula presented.)(Formula presented.) is measured to be (Formula presented.)(Formula presented.), consistent with the previous LHCb result.[Figure not available: see fulltext.].