Three-body decays of $\tilde χ_1^0$ in $\rp$ models with dominant $λ$ and $λ'$ couplings

Details Three-body decays of $\tilde χ_1^0$ in $\rp$ models with dominant $λ$ and $λ'$ couplings Three-body decays of $\tilde χ_1^0$ in $\rp$ models with dominant $λ$ and $λ'$ couplings

2002-10-30

arxiv.org/abs/hep-ph/0210425v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, five figures, Talk presented at the 10th international conference on supersymmetry and unification of fundamental int

Scientific paper

Decays of the lightest neutralino are studied in $R_p$-violating models, with operators $\lambda^\prime L Q D^c$ and $\lambda L L E^c$ involving third-generation matter fields and with dominant $\lambda^\prime$ and $\lambda$ couplings. Decays with the top-quark among the particles produced are considered, in addition to those with an almost massless final state. Phenomenological analyses for examples of both classes of decays are presented. No specific assumption on the composition of the lightest neutralino is made. Our formulae can easily be generalized to study decays of heavier neutralinos. We also discuss effects of the $\rp$ decays of the $\tilde \chi_1^0$ on the possible faking of the $H^\pm$ signal at the LHC by the recently pointed out $\tilde \tau \bar b t$ production through $\lambda'_{333}$ coupling.

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