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arxiv: 1005.4306 · v3 · submitted 2010-05-24 · ✦ hep-ph

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Tau longitudinal polarization in B -> D tau nu and its role in the search for charged Higgs boson

Minoru TANAKA , Ryoutaro Watanabe
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classification ✦ hep-ph
keywords polarizationbosonchargeddecayhiggslongitudinalrolesearch
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We study the longitudinal polarization of the tau lepton in B -> D tau nu decay. After discussing possible sensitivities of tau decay modes to the tau polarization, we examine the effect of charged Higgs boson on the tau polarization in B -> D tau nu. We find a relation between the decay rate and the tau polarization, and clarify the role of the tau polarization measurement in the search for the charged Higgs boson.

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