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

0334867 - FZÚ 2010 RIV US eng J - Journal Article
Abazov, V. M. - Abbott, B. - Abolins, M. - Kupčo, Alexander - Lokajíček, Miloš … Total 528 authors
Measurement of the lifetime of the B_c meson in the semileptonic decay channel.
[Měření doby života Bc(+/-) v semileptonických rozpadových kanálech.]
Physical Review Letters. Roč. 102, č. 9 (2009), 092001/1-092001/7. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT LC527; GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : D0 * detector * B_c meson
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 7.328, year: 2009
http://link.aps.org/doi/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.

S pomocí 1.3 inverzního femtobarnu dat nabraných detektorem D0, měříme dobu života Bc mesonu z rozpadu Bc -> J/psi mu+X
Permanent Link: http://hdl.handle.net/11104/0179485