Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2008-07-18
Nucl.Phys.B807:373-395,2009
Physics
High Energy Physics
High Energy Physics - Lattice
11 pages, 8 figures
Scientific paper
10.1016/j.nuclphysb.2008.09.013
We calculate, in the continuum limit of quenched lattice QCD, the form factor that enters the decay rate of the semileptonic decay B --> D* l nu. By using the step scaling method (SSM), previously introduced to handle two scale problems in lattice QCD, and by adopting flavor twisted boundary conditions we extract F(w) at finite momentum transfer and at the physical values of the heavy quark masses. Our results can be used in order to extract the CKM matrix element Vcb by the experimental decay rate without model dependent extrapolations. The value of Vcb agrees with the one obtained from the B --> D l nu channel and makes us confident that the quenched approximation well applies to these transitions.
de Divitiis Giulia M.
Petronzio Roberto
Tantalo Nazario
No associations
LandOfFree
Quenched lattice calculation of the vector channel B --> D* l nu decay rate does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quenched lattice calculation of the vector channel B --> D* l nu decay rate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quenched lattice calculation of the vector channel B --> D* l nu decay rate will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-388328