Measurements of Bc+ production and mass are performed with the decay mode Bc+→J/ψπ+ using 0.37fb-1 of data collected in pp collisions at √s=7TeV by the LHCb experiment. The ratio of the production cross section times branching fraction between the Bc+→J/ψπ+ and the B+→J/ψK+ decays is measured to be (0.68±0.10(stat)±0.03(syst)±0. 05(lifetime))% for Bc+ and B+ mesons with transverse momenta p T>4GeV/c and pseudorapidities 2.5<η<4.5. The Bc+ mass is directly measured to be 273.7±1.3(stat)±1.6(syst)MeV/c2, and the measured mass difference with respect to the B+ meson is M(Bc+)-M(B+)=994.6±1.3(stat)±0.6(syst)MeV/c2. © 2012 CERN. Published by the American Physical Society under the terms of the.

Aaij, R., Abellan Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., et al. (2012). Measurements of Bc+ production and mass with the Bc+→J/ ψπ+ decay. PHYSICAL REVIEW LETTERS, 109(23) [10.1103/PhysRevLett.109.232001].

Measurements of Bc+ production and mass with the Bc+→J/ ψπ+ decay

CALVI, MARTA;KUCHARCZYK, MARCIN;Martinelli, M;PEREGO, DAVIDE LUIGI;PESSINA, GIANLUIGI EZIO;
2012

Abstract

Measurements of Bc+ production and mass are performed with the decay mode Bc+→J/ψπ+ using 0.37fb-1 of data collected in pp collisions at √s=7TeV by the LHCb experiment. The ratio of the production cross section times branching fraction between the Bc+→J/ψπ+ and the B+→J/ψK+ decays is measured to be (0.68±0.10(stat)±0.03(syst)±0. 05(lifetime))% for Bc+ and B+ mesons with transverse momenta p T>4GeV/c and pseudorapidities 2.5<η<4.5. The Bc+ mass is directly measured to be 273.7±1.3(stat)±1.6(syst)MeV/c2, and the measured mass difference with respect to the B+ meson is M(Bc+)-M(B+)=994.6±1.3(stat)±0.6(syst)MeV/c2. © 2012 CERN. Published by the American Physical Society under the terms of the.
Articolo in rivista - Articolo scientifico
Heavy Flavour Physics; LHC Collider
English
Aaij, R., Abellan Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., et al. (2012). Measurements of Bc+ production and mass with the Bc+→J/ ψπ+ decay. PHYSICAL REVIEW LETTERS, 109(23) [10.1103/PhysRevLett.109.232001].
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