Model Independent Extraction of $|V_{\rm bc}|$ Without Heavy Quark Symmetry

Details Model Independent Extraction of $|V_{\rm bc}|$ Without Heavy Quark Symmetry Model Independent Extraction of $|V_{\rm bc}|$ Without Heavy Quark Symmetry

1994-02-08

arxiv.org/abs/hep-ph/9402249v2

Phys.Rev.D50:21-25,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages revtex3 manuscript. No figures, U. of MD PP #94--086. With our apologies, some innocuous errors corrected and some re

Scientific paper

10.1103/PhysRevD.50.R21

A new method to extract $|V_{\rm bc}|$ is proposed based on a sum--rule for semileptonic decays of the $B$ meson. The method relies on much weaker assumptions than previous approaches which are based on heavy--quark symmetry. This sum--rule only relies on the assumption that the virtual $c \overline{c}$ pair content of the $B$ meson can be neglected. The extraction of the CKM matrix element also requires that the sum--rule saturates in the kinematically accessible region.

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