Charmless semileptonic B decays and |V$_{ub}$| measurements with the BABAR detector

par Alessia d'Orazio (LAL)

lundi 25 juin 2007, 16:00 → 17:30 US/Central

Salle 101 (LAL)

Charmless semileptonic B-meson decays provide an excellent probe for the weak and strong interaction of the b quark. They allow a determination of the magnitude of the CKM matrix element $\vert V_{ub}\vert$, and thus provide important tests of the unitarity of the Cabibbo-Kobayashi-Maskawa matrix. \noindent I will give an overview of the various analysis techniques and present the current status of the experimental measurements of $\vert V_{ub}\vert$ with inclusive and exclusive semileptonic B decays, highligthing the precision measurements with the BABAR detector at PEP-II asymmetric-energy B Factory at SLAC. \noindent I will discuss how various measurements of semileptonic B decays mesh together to determine the size of $\vert V_{ub}\vert$, and how such measurements are made possible through progress in the theory of B decays.

Minutes LAL_seminar_25Jun07.pdf