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arXiv · hep-ph/9212315

Chiral Perturbation Theory for $B \rightarrow D^*$ and $B \rightarrow D$ Semileptonic Transition Matrix Elements at Zero Recoil

L. Randall·M. B. Wise
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Abstract

Heavy quark symmetry predicts the value of $B \rightarrow D$ and $B \rightarrow D^*$ transition matrix elements of the current $\bar c γ_μ(1 - γ_5)b$, at zero recoil (where in the rest frame of the $B$ the $D$ or $D^*$ is also at rest). We use chiral perturbation theory to compute the leading corrections to these predictions which are generated at low momentum, below the chiral symmetry breaking scale.

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L. Randall, M. B. Wise. 1992-12-30. Chiral Perturbation Theory for $B \rightarrow D^*$ and $B \rightarrow D$ Semileptonic Transition Matrix Elements at Zero Recoil. https://doi.org/10.1016/0370-2693(93)90057-o

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