Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.232001
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- CAPES
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- FINEP (Brazil)
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- CNRS/IN2P3 (France)
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- Science and Technology Facilities Council [ST/K000705/1, ST/J004820/1, ST/H006737/1, ST/K001310/1 LHCb Upgrades, ST/K001604/1 DMUK, ST/K001604/1 LHCb Upgrades, ST/K001604/1 GRIDPP, ST/J005614/1, ST/H00100X/2, ST/L001144/1, ST/K001604/1 MICE/UKNF, ST/K001310/1, GRIDPP, ST/K00073X/1, ST/K001310/1 ATLAS Upgrades, ST/K001361/1 ATLAS Upgrades, 1208164, LHCb, PP/E000355/1, ST/H00100X/1, ST/G502412/1, ST/K001361/1 LHCb, ST/K001310/1 LHCb, ST/K00140X/1, ST/H001085/2, ST/F007094/1, ST/K001604/1, ST/F008015/1, ST/K001418/1, ST/H001093/2, ST/K001604/1 T2K, ST/I002839/1, ST/M001431/1, ST/K000616/1, ST/H001026/1, PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/H001093/1, ST/K001361/1, ST/K001604/1 CMS Upgrade, ST/K001256/1, PP/E002722/1, ST/K001604/1 SuperNEMO, ST/K001361/1 ATLAS, ST/H00081X/2, ST/K001604/1 LHCb, ST/L001195/1, LHCb Upgrades, ST/L001225/1, ST/H00081X/1, 1096173, ST/M001474/1, ST/I505572/1, ST/G005974/1, ST/H001026/2, ST/K001310/1 ATLAS, ST/K001361/1 MINOS/MINOS+, ST/H001069/2] Funding Source: researchfish
- STFC [ST/H001069/2, ST/K00140X/1, ST/H001085/2, ST/H006737/1, ST/H001026/1, ST/H001093/1, ST/L001195/1, ST/F008015/1, ST/L001225/1, PP/E000355/1, ST/J004820/1, ST/K000705/1, ST/H00100X/1, ST/L001144/1, ST/H00100X/2, PP/E000347/1, ST/H00081X/2, ST/K001604/1, ST/G005974/1, ST/H001026/2, ST/K00073X/1, ST/K004646/1, ST/H00081X/1, ST/H001093/2, ST/J005614/1, ST/M001431/1, LHCb, ST/I505572/1, LHCb Upgrades, ST/K001361/1, PP/E002722/1, ST/G502412/1, ST/F007094/1, ST/I002839/1, ST/K000616/1] Funding Source: UKRI
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Measurements of B-c(+) production and mass are performed with the decay mode B-c(+) -> J/psi pi(+) using 0.37 fb(-1) of data collected in pp collisions at root s = 7 TeV by the LHCb experiment. The ratio of the production cross section times branching fraction between the B-c(+) -> J/psi pi(+) and the B+ -> J/psi K+ decays is measured to be (0.68 +/- 0.10(stat) +/- 0.03(syst) +/- 0.05(lifetime))% for B-c(+) and B+ mesons with transverse momenta p(T) > 4 GeV/c and pseudorapidities 2.5 < eta < 4.5. The B-c(+) mass is directly measured to be 6273.7 +/- 1.3(stat) +/- 1.6(syst) MeV/c(2), and the measured mass difference with respect to the B+ meson is M(B-c(+)) - M(B+) = 994.6 +/- 1.3(stat) +/- 0.6(syst) MeV/c(2).
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