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arXiv · hep-ph/9806382

Tau Lepton Mixing with Charginos and its Effects on Chargino Searches at e+e- Colliders

A. G. Akeroyd·Marco A. Diaz·Jose W. F. Valle
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Abstract

In bilinear R-Parity violating models where a term ε_3L_3H_2 is introduced in the superpotential, the tau lepton can mix with charginos. We show that this mixing is fully compatible with LEP1 precision measurements of the Zττand Wτν_τcouplings even for large values of ε_3 and of the induced vacuum expectation value v_3 of the tau-sneutrino. The single production of charginos at e+e- colliders is possible in this case and we present numerical values of the cross-section at LEP1, LEP2 and an NLC. We find maximum values of 10 pb at LEP1 and 1 fb at NLC, while the corresponding values at LEP2 are too small to observe.

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A. G. Akeroyd, Marco A. Diaz, Jose W. F. Valle. 1998-06-16. Tau Lepton Mixing with Charginos and its Effects on Chargino Searches at e+e- Colliders. https://doi.org/10.1016/s0370-2693(98)01191-5

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