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Measurements of partial branching fractions for B̄→Xulν̄ and determination of |Vub|

Abstract:

We present partial branching fractions for inclusive charmless semileptonic B decays B̄→Xu ν̄, and the determination of the Cabibbo-Kobayashi-Maskawa matrix element |Vub|. The analysis is based on a sample of 383×106 Υ(4S) decays into BB̄ pairs collected with the BABAR detector at the SLAC PEP-II e+e- storage rings. We select events using the invariant mass MX of the hadronic system, the invariant mass squared, q2, of the lepton and neutrino pair, the kinematic variable P+, or one of their co...

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Journal:
Physical Review Letters
Volume:
100
Issue:
17
Publication date:
2008-04-29
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:232278ef-4323-4863-b0ac-faabda73b1c9
Source identifiers:
211389
Local pid:
pubs:211389
Language:
English

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