Quenched lattice calculation of semileptonic heavy-light meson form factors

2007/07/31 by Giulia Maria de Divitiis, G. M. de Divitiis, R. Petronzio +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph

paper · pdf · doi:10.1088/1126-6708/2007/10/062

published as JHEP0710:062,2007 · 16 pages, 10 figures, version accepted for publication on JHEP

arxiv created 2007/10/03 · openalex publication_date 2007/10/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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.

Citations

• A numerical study of partially twisted boundary conditions
• The Schrödinger functional — a renormalizable probe for non-abelian gauge theories
• CP-Violation in the Renormalizable Theory of Weak Interaction