Polarization of $τ$ lepton from scalar tau decay as a probe of neutralino mixing

Details Polarization of $τ$ lepton from scalar tau decay as a probe of neutralino mixing Polarization of $τ$ lepton from scalar tau decay as a probe of neutralino mixing

1994-12-27

arxiv.org/abs/hep-ph/9412374v1

Phys.Rev. D51 (1995) 6281-6291

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages Latex, 5 figures(not included). compressed ps file of the figures available at ftp://ftp.kek.jp/kek/preprints/TH/TH-4

Scientific paper

10.1103/PhysRevD.51.6281

The $\tau$ lepton arising from the scalar tau ($\st$) decay is naturally polarized. $\ptau$ depends on the left--right mixing of the $\st$ and the gaugino--higgsino mixing of the neutralino. The polarization $\ptau$ could be measured from the energy distribution of the decay products of $\tau$ at future $\epem$ colliders. A measurement of $\ptau$and of the $\st$ production cross section allows to determine both these mixing angles.

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