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.
DE DIVITIIS, G.m., Petronzio, R., Tantalo, N. (2009). Quenched lattice calculation of the vector channel B→Dℓν decay rate. NUCLEAR PHYSICS. B, 807(1-2), 373-395 [10.1016/j.nuclphysb.2008.09.013].
Quenched lattice calculation of the vector channel B→Dℓν decay rate
DE DIVITIIS, GIULIA MARIA;PETRONZIO, ROBERTO;TANTALO, NAZZARIO
2009-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
