Impact of bosonic decays on the search for stau_2 and tau-sneutrino

Details Impact of bosonic decays on the search for stau_2 and tau-sneutrino Impact of bosonic decays on the search for stau_2 and tau-sneutrino

1999-04-21

arxiv.org/abs/hep-ph/9904417v1

Phys.Lett.B460:157-163,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 figures, LaTeX2e

Scientific paper

10.1016/S0370-2693(99)00745-5

We perform a detailed study of the decays of the heavier tau slepton (stau_2) and tau-sneutrino (snu_tau) in the Minimal Supersymmetric Standard Model (MSSM). We show that the decays into Higgs or gauge bosons, i.e. stau_2 -> stau_1 + (h^0, H^0, A^0 or Z^0), stau_2 -> snu_tau + (H^- or W^-), and snu_tau -> stau_1 + (H^+ or W^+), can be very important due to the sizable tau Yukawa coupling and large mixing parameters of stau. Compared to the decays into fermions, such as stau_2 -> tau + neutralino_i and stau_2 -> nu_tau + chargino_j^-, these bosonic decay modes can have significantly different decay distributions. This could have an important influence on the search for stau_2 and snu_tau and the determination of the MSSM parameters at future colliders.

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