Measurement of the lifetime of the Bc +- meson in the semileptonic decay channel

Authors
  • V.M. Abazov
  • [Unknown] et al.
  • M. Anastasoaie
  • L.S. Ancu
  • S.J. de Jong
  • F. Filthaut
  • C.F. Galea
  • J.G. Hegeman
  • P. Houben
  • N.A. Naumann
  • P.J. van den Berg
  • W.M. van Leeuwen
Publication date 2009
Journal Physical Review Letters
Volume | Issue number 102 | 9
Pages (from-to) 092001
Number of pages 7
Organisations
  • Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for High Energy Physics (IHEF)
Abstract Using approximately 1.3 fb(-1) of data collected by the D0 detector between 2002 and 2006, we measure the lifetime of the B-c(+/-) meson in the B-c(+/-)-> J/psi mu(+/-)+X final state. A simultaneous unbinned likelihood fit to the J/psi+mu invariant mass and lifetime distributions yields a signal of 881 +/- 80(stat) candidates and a lifetime measurement of tau(B-c(+/-))=0.448(-0.036)(+0.038)(stat)+/- 0.032(syst) ps.
Document type Article
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