22-28 July 2010
Palais des Congrès de Paris
Europe/Paris timezone

Measurements of Partial Branching Fractions for B -> X_u l anti-nu and Determination of |Vub|

24 Jul 2010, 10:00
Salle 242A ()

Salle 242A

Parallel Session Talk 06 - CP violation, CKM and Rare Decays 06 - CP violation, CKM and Rare Decays


Michael Sigamani (Dipartimento di Fisica G. Marconi-Universita di Roma I 'La Sapie)


We present partial branching fractions for inclusive charmless semi-leptonic B decays anti-B -> X_u l anti-nu, and the determination of the CKM matrix element |V_{ub}|. The analysis is based on a sample of Upsilon(4S) decays into B anti-B pairs collected with the BABAR detector at the PEP-II e+ e- storage rings. We select events using either the invariant mass M_X of the hadronic system, the invariant mass squared, q^2 of the lepton and neutrino pair, the kinematic variable P_+, the lepton energy E_l, or one of their combinations. We determine partial branching fractions in limited regions of phase space. Corresponding values of |V_{ub}| are extracted using several theoretical calculations.

Primary authors

Michael Roney (BABAR/Univ. of Victoria) TBD TBD (BABAR)

Presentation Materials