• Open Access

Observation of Bc+J/ψD(*)K(*) decays

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. D 95, 032005 – Published 21 February 2017

Abstract

A search for the decays Bc+J/ψD(*)0K+ and Bc+J/ψD(*)+K*0 is performed with data collected at the LHCb experiment corresponding to an integrated luminosity of 3fb1. The decays Bc+J/ψD0K+ and Bc+J/ψD*0K+ are observed for the first time, while first evidence is reported for the Bc+J/ψD*+K*0 and Bc+J/ψD+K*0 decays. The branching fractions of these decays are determined relative to the Bc+J/ψπ+ decay. The Bc+ mass is measured, using the J/ψD0K+ final state, to be 6274.28±1.40(stat)±0.32(syst)MeV/c2. This is the most precise single measurement of the Bc+ mass to date.

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  • Received 23 December 2016

DOI:https://doi.org/10.1103/PhysRevD.95.032005

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2017 CERN, for the LHCb Collaboration

Physics Subject Headings (PhySH)

  1. Physical Systems
  1. Properties
Particles & Fields

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Vol. 95, Iss. 3 — 1 February 2017

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