Semileptonic B-Meson Decays at BaBar

Abstract

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 $\var{B} \to D \ell^- \barν_{\ell}$) million ${\rm Y}(4S)\to B\bar{B}$ 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.

4 pages, 3 figures. Presented at the 14th Lomonosov Conference on Elementary Particle Physics, Moscow, Russia, 19th - 25th August 2009

References in corpus (3)

• Measurement of |V_cb| and the Form-Factor Slope in Bbar -> D l- nubar Decays in Events Tagged by a Fully Reconstructed B Meson
• Measurement and interpretation of moments in inclusive semileptonic decays Bbar --> X_c l- nubar
• Determinations of |Vub| from Inclusive Semileptonic B Decays with Reduced Model Dependence