Lightest-neutralino decays in R_p-violating models with dominant lambda^{prime} and lambda couplings

Details Lightest-neutralino decays in R_p-violating models with dominant lambda^{prime} and lambda couplings Lightest-neutralino decays in R_p-violating models with dominant lambda^{prime} and lambda couplings

2001-08-29

arxiv.org/abs/hep-ph/0108244v3

JHEP 0207 (2002) 037

Physics

High Energy Physics

High Energy Physics - Phenomenology

40 pages, 11 figures, version to appear in JHEP

Scientific paper

10.1088/1126-6708/2002/07/037

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. Generalizations to decays of the lightest neutralino induced by subdominant lambda^{prime} and lambda couplings are straightforward. 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, and the formulae listed here can be easily generalized to study decays of heavier neutralinos. It has been recently pointed out that, for a sizable coupling lambda^{prime}_{333}, tau-sleptons may be copiously produced at the LHC as single supersymmetric particles, in association with top- and bottom-quark pairs. This analysis of neutralino decays is, therefore, a first step towards the reconstruction of the complete final state produced in this case.

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