Measurements of Bc+ production and mass with the Bc+→J/ ψπ+ decay
- R. Aaij,
- C. Abellan Beteta,
- A. Adametz,
- B. Adeva,
- M. Adinolfi,
- C. Adrover
- National Institute for Subatomic Physics,
- Ramon Llull University,
- University of Barcelona,
- Heidelberg University,
- University of Santiago de Compostela,
- University of Bristol
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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 6273.7±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.
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EnglishArticle number
232001Journal (Volume, Issue Number)
Physical Review Letters (Volume 109, Issue 23)Publication milestones
- Published - 05/12/2012
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0031-9007Publication IDs
- Scopus: 84870829988
- WOS: 000312012200007