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Determination of the angle gamma using multibody D decays in B^+- -> D K^+-

We describe a method for determining gamma using B^+- -> D K^+- decays followed by a multibody D decay. In the talk we focus on K_S pi^- pi^+ final state, but other modes such as D -> K_S K^- K^+ and D -> K_S pi^- pi^+ pi^0 can also be used. The main advantages of the method are that it uses only Cabibbo allowed D decays, and that large strong phases are expected due to the presence of resonances. Since no knowledge about the resonance structure is needed, gamma can be extracted without any hadronic uncertainty.

preprint2003arXivOpen access
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Determination of the angle gamma using multibody D decays in B^+- -> D K^+- | BZPEER | BZPEER