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Measurement of the lifetime of the B_c meson in the semileptonic decay channel

Research output: Contribution to journalJournal article


Article number092001
Journal publication date2/03/2009
JournalPhysical Review Letters
Journal number9
Number of pages7
Original languageEnglish


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 nu 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 +0.038 -0.036 (stat) +/- 0.032 (syst) ps.

Bibliographic note

© 2009 The American Physical Society 7 pages, 2 figures, submitted to Phys. Rev. Lett