Tau polarimetry in B meson decays

Rodrigo Alonso, Jorge Martin Camalich, Susanne Westhoff

SciPost Phys. Proc. 1, 012 (2019) · published 19 February 2019

Proceedings event

The 15th International Workshop on Tau Lepton Physics

Abstract

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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