An Analysis of the Decay $B \rightarrow D^* X \ell \barν_\ell$ with Predictions from Heavy Quark and Chiral Symmetry

Details An Analysis of the Decay $B \rightarrow D^* X \ell \barν_\ell$ with Predictions from Heavy Quark and Chiral Symmetry An Analysis of the Decay $B \rightarrow D^* X \ell \barν_\ell$ with Predictions from Heavy Quark and Chiral Symmetry

1992-12-01

arxiv.org/abs/hep-ph/9212205v1

Phys.Rev. D48 (1993) 2121-2128

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, uses jytex.tex and tables.tex; 3 figures not included but available on request

Scientific paper

10.1103/PhysRevD.48.2121

This paper considers the implications of the heavy quark and chiral symmetries for the semi-leptonic decay $B \rightarrow D^* X \ell \bar \nu_\ell$. The general kinematic analysis for decays of the form {\sl pseudoscalar meson $\rightarrow$ vector meson $+$ pseudoscalar meson $+$ lepton $+$ anti-lepton} is presented. This formalism is applied to the above exclusive decay which allows the differential decay rate to be expressed in a form that is ideally suited for the experimental determination of the different form factors for the process through angular distribution measurements. Heavy quark and chiral symmetry predictions for the form factors are presented, and the differential decay rate is calculated in the kinematic region where chiral perturbation theory is valid.

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