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arXiv · 1212.4146

Stability of R parity in supersymmetric models extended by U(1)_{B-L}

J. E. Camargo-Molina·B. O'Leary·W. Porod·F. Staub
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Abstract

We perform a study of the stability of R-parity-conserving vacua of a constrained version of the minimal supersymmetric model with a gauged U(1)_{B-L} which can conserve R-parity, using homotopy continuation to find all the extrema of the tree-level potential, for which we also calculated the one-loop corrections. While we find that a majority of the points in the parameter space preserve R-parity, we find that a significant portion of points which naively have phenomenologically acceptable vacua which conserve R-parity actually have deeper vacua which break R-parity through sneutrino VEVs. We investigate under what conditions the deeper R-parity-violating vacua appear. We find that while previous exploratory work was broadly correct in some of its qualitative conclusions, we disagree in detail.

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J. E. Camargo-Molina, B. O'Leary, W. Porod, F. Staub. 2013-08-12. Stability of R parity in supersymmetric models extended by U(1)_{B-L}. https://doi.org/10.1103/physrevd.88.015033

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