Abstract
The R-parity violating decays of both Wino chargino and Wino neutralino LSPs are analyzed within the context of the B − L MSSM “heterotic standard model”. These LSPs correspond to statistically determined initial soft supersymmetry breaking parameters which, when evolved using the renormalization group equations, lead to an effective theory satisfying all phenomenological requirements; including the observed electroweak vector boson and Higgs masses. The explicit decay channels of these LSPs into standard model particles, the analytic and numerical decay rates and the associated branching ratios are presented. The decay lengths of these RPV interactions are discussed. It is shown that the vast majority of these decays are “prompt”, although a small, but calculable, number correspond to “displaced vertices” of various lengths. It is demonstrated that for a Wino chargino LSP, the NLSP is the Wino neutralino with a mass only slightly higher than the LSP — and vice-versa. As a consequence, we show that both the Wino chargino and Wino neutralino LSP/NLSP R-parity violating decays should be simultaneously observable at the CERN LHC.
Highlights
In a previous paper [1] we presented, within the context of the N = 1 supersymmetric B −L MSSM, the decay channels and the associated analytic decay rates for Wino/Higgsino chargino and arbitrary neutralino R-parity violating (RPV) decays to standard model particles
It is demonstrated that for a Wino chargino lightest supersymmetric particles (LSPs), the NLSP is the Wino neutralino with a mass only slightly higher than the LSP — and vice-versa. We show that both the Wino chargino and Wino neutralino LSP/NLSP R-parity violating decays should be simultaneously observable at the CERN LHC
For the purposes of this paper this is sufficient, since our goal is to present the allowed RPV decay channels of Wino chargino and Wino neutralino LSPs in the B − L MSSM theory and to give their leading order decay rates, branching ratios and the relationship of these to the neutrino mass hierarchy
Summary
For the purposes of this paper this is sufficient, since our goal is to present the allowed RPV decay channels of Wino chargino and Wino neutralino LSPs in the B − L MSSM theory and to give their leading order decay rates, branching ratios and the relationship of these to the neutrino mass hierarchy. In addition to a discussion of the input parameters for the computer code, reference [1] presented all of the phenomenological requirements that must be fulfilled for the low energy B − L MSSM vacuum to be physically realistic Whether or not these requirements are satisfied depends entirely on the initial soft supersymmetry breaking parameters that are chosen. The reason that the Wino neutralino mass distribution peaks toward the low mass values was discussed in detail in [1], and we refer the reader to that paper for details
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