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arXiv · hep-ph/9310356

The Determination of $|\Vcb|$ and QCD Sum Rules in Hqet

Zoltan Ligeti
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Abstract

I review recent developments in Heavy Quark Effective Theory (HQET) that lead to an almost model--independent determination of the $|\Vcb|$ element of the Cabibbo--Kobayashi--Maskawa matrix from exclusive semileptonic $B\ra D^{(*)}$ decays. In particular, I compare the theoretical uncertainties in the $B\ra D^*\ell\,\barν$ and the $B\ra D\,\ell\,\barν$ decay modes. I discuss the applications of QCD sum rules within HQET to semileptonic heavy meson decays and give predictions for the form factors measurable in $B\ra D^{(*)}\ell\,\barν$ decays.

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Zoltan Ligeti. 1993-10-27. The Determination of $|\Vcb|$ and QCD Sum Rules in Hqet. https://arxiv.org/abs/hep-ph/9310356

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