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http://www.worldscientific.com/worldscibooks/10.1142/0496
In this paper we compute, within in the context of a relativistic quark model, the Isgur-Wise functions for exclusive semileptonic $\bar B \to X_c$ decays, where $X_c$ is any charmed mesons with total spin $J=0,1,2$ or one of their first excited states. The relevant matrix elements are computed by a direct numerical integration, in coordinate space, of the convolution of the wave function of the $B$ meson at rest and the wave function of the $X_c$ meson, boosted according with its recoil factor. Our results are compared with other predictions found in the existing literature.
We present results of a calculation of semileptonic decays of mesons in the string-like U(4) SU{sub f}(n) 0 SU{sub s} (2) SU{sub c}(3) model with U(4) SO(4) dynamic symmetry. The calculation describes the available data as accurately as the semi-relativistic quark model. We make predictions for several exclusive decays which can be tested by future experiments.
After a brief review of the quark model, we discuss our present knowledge of the spectroscopy of charm and bottom mesons and baryons. We go on to review the lifetimes, semileptonic, and purely leptonic decays of these particles. We conclude with a brief discussion B and D mixing and rare decays.