Quenched lattice calculation of semileptonic heavy-light meson form factors
arXiv:0707.0587 · doi:10.1088/1126-6708/2007/10/062
Abstract
We calculate, in the continuum limit of quenched lattice QCD, the matrix elements of the heavy-heavy vector current between heavy-light pseudoscalar meson states. We present the form factors for different values of the initial and final meson masses at finite momentum transfer. In particular, we calculate the non-perturbative correction to the differential decay rate of the process B --> D l nu including the case of a non-vanishing lepton mass.
16 pages, 10 figures, version accepted for publication on JHEP