Tau Lepton Mixing with Charginos and its Effects on Chargino Searches at e+e- Colliders
arXiv:hep-ph/9806382 · doi:10.1016/S0370-2693(98)01191-5
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.
16 pages (including 7 figures), LaTex, uses axodraw.sty (included)
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