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arXiv · hep-ph/9703269

Connections Between Inclusive and Exclusive Semileptonic B Decay

Mark B. Wise
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Abstract

B decay sum rules relate exclusive B semileptonic decay matrix elements to forward B-meson matrix elements of operators in HQET. At leading order the operators that occur are the b-quark kinetic energy $λ_1$ and chromomagnetic energy $λ_2$. The latter is determined by the measured $B^*-B$ mass splitting. The derivation of these sum rules is reviewed and perturbative QCD corrections are discussed. A determination of $λ_1$ and the energy of the light degrees of freedom in a B-meson, $\barΛ$, from semileptonic B decay data is presented. Future prospects for improving these sum rules are discussed.

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Mark B. Wise. 1997-03-07. Connections Between Inclusive and Exclusive Semileptonic B Decay. https://doi.org/10.1063/1.53254

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