Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-01-13
Phys.Rev. D62 (2000) 014006
Physics
High Energy Physics
High Energy Physics - Phenomenology
revtex, 17 pages, improved version to be published in Phys. Rev. D. Results remain unchanged, but the presentation has been mo
Scientific paper
10.1103/PhysRevD.62.014006
We calculate the form factors for weak decays of $B_{(s)}$ and $D_{(s)}$ mesons to light pseudoscalar and vector mesons. To reveal the intimate connection between different decay modes and to be able to perform the calculations in the full physical $q^2$-region we use a relativistic dispersion approach based on the constituent quark picture. This approach gives the form factors as relativistic double spectral representations in terms of the wave functions of the initial and final mesons. The form factors have the correct analytic properties and satisfy general requirements of nonperturbative QCD in the heavy quark limit. The disadvantages of quark models related to ill-defined effective quark masses and not precisely known meson wave functions are reduced by fitting the quark model parameters to lattice QCD results for the $B\to \rho$ transition form factors at large momentum transfers and to the measured total $D\to (K,K^*)l\nu$ decay rates. This allows us to predict numerous form factors for all kinematically accessible $q^2$ values.
Melikhov Dmitri
Stech Berthold
No associations
LandOfFree
Weak form factors for heavy meson decays: an update 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 Weak form factors for heavy meson decays: an update, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weak form factors for heavy meson decays: an update will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-360728