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Normal and transverse single tau-polarization at the z-peak

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Normal and transverse single tau-polarization at the z-peak

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Bernabeu Alberola, José Perfil; González Sprinberg, Gabriel A.; Vidal Perona, Jorge Perfil

This document is a artículoDate1994

Este documento está disponible también en : http://hdl.handle.net/10550/53251

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We study normal (to the collision plane) and transverse (within the collision plane) single-τ polarization in τ pairs produced in e+e− unpolarized collisions at the Z-resonance. The transverse polarization component is sensitive to the anomalous weak-magnetic moment, whereas the normal polarization component is sensitive to a CP-violating weak-electric dipole moment. We show how these components of the single τ polarization are accessible from the angular distribution of its decay products. We define a CP violating asymmetry of the τ decay products which, with 107Z′s produced, provides a sensitivity of 2.3 × 10−18e·cm for the weak-electric dipole moment.

Bernabeu Alberola, José; González Sprinberg, Gabriel A.; Vidal Perona, Jorge (1994) Normal and transverse single tau-polarization at the z-peak Physics Letters B 326 1-2 168 174

http://dx.doi.org/10.1016/0370-2693(94)91209-2