Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-01-22
Phys.Lett. B451 (1999) 187
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, LaTex2e, no figure
Scientific paper
10.1016/S0370-2693(99)00187-2
We prove the full covariance of the heavy-to-light weak current matrix elements based on the Bakamjian-Thomas construction of relativistic quark models, in the heavy mass limit for the parent hadron and the large energy limit for the daughter one. Moreover, this quark model representation of the heavy-to-light form factors fulfills the general relations that were recently argued to hold in the corresponding limit of QCD, namely that there are only three independent form factors describing the B -> pi (rho) matrix elements, as well as the factorized scaling law sqrt(M)z(E) of the form factors with respect to the heavy mass M and large energy E. These results constitute another good property of the quark models \`a la Bakamjian-Thomas, which were previously shown to exhibit covariance and Isgur-Wise scaling in the heavy-to-heavy case.
Charles Jerome
Oliver L. L.
Pene Olivier
Raynal Jean-Claude
Yaouanc Alain Le
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