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

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

2008-05-16

arxiv.org/abs/0805.2614v1

Phys.Rev.Lett.102:092001,2009

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.102.092001

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.

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