Precision measurement of the Bc+ meson mass

LHCb Collaboration

Research output: Contribution to journalArticlepeer-review


A precision measurement of the Bc+ meson mass is performed using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9.0 fb1. The B+ mesons are reconstructed via the decays Bc+ → J/ψπ+, Bc+ → J/ψπ+ππ+, c Bc+ → J/ψppπ ¯ +, Bc+ → J/ψDs+, Bc+ → J/ψD0K+ and Bc+ → Bs0π+. Combining the results of the individual decay channels, the Bc+ mass is measured to be 6274.47± 0.27 (stat) ± 0.17 (syst) MeV/c2. This is the most precise measurement of the Bc+ mass to date. The difference between the Bc+ and Bs0 meson masses is measured to be 907.75 ± 0.37 (stat) ± 0.27 (syst) MeV/c2.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Apr 17 2020

ASJC Scopus subject areas

  • General

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