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arXiv · hep-ph/9508271

W- and Z-Boson Interactions in Supersymmetric Models with Explicit R-Parity Violation

Marek Nowakowski·Apostolos Pilaftsis
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Abstract

The minimal supersymmetric Standard Model with explicit R-parity nonconservation contains bilinear terms involving the left-handed lepton superfields and the Higgs chiral multiplet with hypercharge Y=+1, which cannot in general be rotated away in the presence of soft-supersymmetry- breaking interactions. These bilinear lepton-number-violating terms are found to give rise to non-zero vacuum expectation values of the scalar neutrinos. This leads to nonuniversal and flavour-violating tree-level couplings of the W and Z bosons to charged leptons and neutrinos. The parameter space of this novel scenario is systematically analyzed and further restricted by a number of laboratory, astrophysical, and cosmological constraints. The possibility that our minimal model can account for the KARMEN anomaly is examined.

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Marek Nowakowski, Apostolos Pilaftsis. 1995-08-10. W- and Z-Boson Interactions in Supersymmetric Models with Explicit R-Parity Violation. https://doi.org/10.1016/0550-3213(95)00594-3

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