Determination of the CKM Matrix Element |V_cb| from Semileptonic B Decays
- SLAC
We report studies of semileptonic decays, B {yields} X{sub c}{ell}{nu}, based on a sample of 88 million B{bar B} events recorded with the BABAR detector. We have measured four moments of the electron energy distribution and four moments of the hadronic mass distribution, each as a function of the minimum electron energy. From these moments we determine the inclusive branching fraction, the CKM matrix element |V{sub cb}|, and other heavy quark parameters, using Heavy Quark Expansions (HQE) to order 1/m{sub b}{sup 3} in the kinetic mass scheme. In addition, we have studied a large sample of exclusive B{sup 0} {yields} D*{sup -}{ell}{sup +}{nu} decays. This sample is used to extract the vector and axial form factors, the normalization and slope of the HQET form factor to determine |V{sub cb}|.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 839622
- Report Number(s):
- SLAC-PUB-10843
- Country of Publication:
- United States
- Language:
- English
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