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Exploring the Weak Phase gamma in B^+- -> pi K Decays

Matthias Neubert
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Abstract

Measurements of the rates for the hadronic decays B^+- -> pi K along with the CP-averaged B^+- -> pi^+- pi^0 branching ratio can be used to bound and extract the weak phase gamma=-arg(V_ub). Using preliminary CLEO data, we obtain the bounds |gamma|>93 degrees at 1 sigma, and |gamma|>71 degrees at 90 % confidence level.

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Matthias Neubert. 1999-04-13. Exploring the Weak Phase gamma in B^+- -> pi K Decays. https://arxiv.org/abs/hep-ph/9904321

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