Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2011-03-02
Particle Physics at the Year of Astronomy: Proceedings of the Fourteenth Lomonosov Conference on Elementary Particle Physics,
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, 3 figures. Presented at the 14th Lomonosov Conference on Elementary Particle Physics, Moscow, Russia, 19th - 25th Aug
Scientific paper
Presented are selected results of semileptonic B decays at BaBar. Two measurements of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ are reported. One using moments of the hadronic-mass spectrum in inclusive $\bar{B} \to X_{c} \ell^{-} \bar{\nu}$ decays, and the other, exclusive $\bar{B} \to D \ell^- \bar{\nu}_{\ell}$ decays. These results are based on data samples of 232 (inclusive $\bar{B} \to X_{c} \ell^{-} \bar{\nu}$) and 460 (exclusive $\var{B} \to D \ell^- \bar{\nu}_{\ell}$) million $\Upsilon(4S) \to B\bar{B}$ decays, recorded by the $BaBar$ detector at the PEP-II $e^+e^-$-storage rings. Semileptonic B decays are identified by requiring a lepton ($e$ or $\mu$) in events tagged with a full reconstruction of one of the B mesons in the $B\bar{B}$ pair.
BABAR collaboration for the
Sigamani M.
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