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Tau Polarimetry in B Meson Decays

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arxiv 1811.05664 v1 pith:4IKFIHDR submitted 2018-11-14 hep-ph hep-ex

Tau Polarimetry in B Meson Decays

classification hep-ph hep-ex
keywords decaysarticlebelledecaydevelopmentseffectsexplainextract
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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This article summarizes recent developments in $B\to D^{(\ast)}\tau\nu$ decays. We explain how to extract the tau lepton's production properties from the kinematics of its decay products. The focus is on hadronic tau decays, which are most sensitive to the tau polarizations. We present new results for effects of new physics in tau polarization observables and quantify the observation prospects at BELLE II.

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