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arXiv · hep-ph/9710550

Short Distance Coefficients and the Vanishing of the Lepton Asymmetry in $B\to V\ell^+\ell^-$

Gustavo Burdman
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Abstract

We derive a condition the short distance coefficients governing $b\to (s,d)\ell^+\ell^-$ transitions must satisfy in order for the forward-backward asymmetry to vanish in the exclusive modes $B\to (K^*,ρ)\ell^+\ell^-$. This relation, which is satisfied in the standard model, involves the coefficient entering in $b\to sγ$ transitions as well as one of the additional Wilson coefficients present in the leptonic modes. We show that the resulting relation is largely free of hadronic uncertainties, thus constituting a reliable test of the standard model in exclusive rare B decays.

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Gustavo Burdman. 1997-10-30. Short Distance Coefficients and the Vanishing of the Lepton Asymmetry in $B\to V\ell^+\ell^-$. https://doi.org/10.1103/physrevd.57.4254

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