Gagliardi, N. (2010) Measurements of partial branching fractions for B → Xulν and determination of |Vub| at BaBar. Il nuovo cimento C, 33 (6). pp. 267-268. ISSN 1826-9885
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Abstract
We present partial branching fractions for inclusive charmless semileptonic B decays B → Xulν, and the determination of the CKM matrix element |Vub|. The analysis is based on a sample of 467 million Υ(4S) decays into B B pairs collected with the BaBar detector at the PEPII e+e− storage rings. The invariant mass of the hadronic system, MX, the squared invariant mass of the lepton pair, q2, and the variable P+ = EX − |PX| and their combinations, in the process B → Xulν are used as discriminant variables to suppress semileptonic decays with charm. Partial branching fractions are measured as a function of the cuts on the above variables. Theoretical calculations are used to compute acceptances and related uncertainties, thereby allowing to extract |Vub|.
| Item Type: | Article |
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| Uncontrolled Keywords: | Decays of bottom mesons |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 03 Apr 2020 14:22 |
| Last Modified: | 03 Apr 2020 14:22 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17142 |
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