Measurement of the lifetime of the Bc+ meson using the Bc+→J/ψπ+ decay mode

Academic Article

Abstract

  • The difference in total widths between the Bc+ and B+ mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb experiment in 7 and 8 TeV centre-of-mass energy proton-proton collisions at the LHC. Through the study of the time evolution of Bc+→J/ψπ+ and B+→J/ψK+ decays, the width difference is measured to beδΓ≡ΓBc+-ΓB+=4.46±0.14±0.07mm-1c, where the first uncertainty is statistical and the second systematic. The known lifetime of the B+ meson is used to convert this to a precise measurement of the Bc+ lifetime,τBc+=513.4±11.0±5.7fs, where the first uncertainty is statistical and the second is systematic.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Aaij R; Adeva B; Adinolfi M; Affolder A; Ajaltouni Z; Akar S; Albrecht J; Alessio F; Alexander M; Ali S
  • Start Page

  • 29
  • End Page

  • 37
  • Volume

  • 742