Phenomenology of SUSY-models with spontaneously broken R-parity

Details Phenomenology of SUSY-models with spontaneously broken R-parity Phenomenology of SUSY-models with spontaneously broken R-parity

1997-08-29

arxiv.org/abs/hep-ph/9708491v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, Latex, talk given in Beyond the Standard Model V in Balholm, Norway

Scientific paper

10.1063/1.54506

We review the consequences of spontaneously broken R-parity in present and planned lepton-lepton colliders. In the left-right models the R-parity, $R=(-1)^{3(B-L)+2S}$, is preserved due to the gauge symmetry, but it must be spontaneously broken in order to the scalar spectrum to be physically consistent. The spontaneous breaking is generated via a non-vanishing VEV of at least one of the sneutrinos, which necessarily means non-conservation of lepton number $L$. The R-parity violating couplings are parametrized in terms of mixing angles, whose values depend on model parameters. Combined with the constraints derived from low-energy measurements this yields allowed ranges for various R-parity breaking couplings. The R-parity breaking allows for the processes in which a single chargino or neutralino is produced, subsequently decaying at the interaction point to non-supersymmetric particles.

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