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arXiv · hep-ph/9804371

Spontaneous R-Parity Violation and Electroweak Baryogenesis

Tuomas Multamaki·Iiro Vilja
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Abstract

The possibility of baryogenesis at the electroweak phase transition is considered within the context of a minimal supersymmetric standard model with spontaneous R-parity violation. Provided that at least one of the sneutrino fields acquires a large enough vacuum expectation value, a sufficient baryon asymmetry can be created. Compared to R-parity conserving models the choice of soft supersymmetry breaking parameters is less restricted. The observed baryon asymmetry, n_B/s ~ 10^(-10), can be explained by this scenario and the produced baryon-to-entropy ratio may easily be as high as n_B/s ~ 10^(-9).

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Tuomas Multamaki, Iiro Vilja. 1998-04-23. Spontaneous R-Parity Violation and Electroweak Baryogenesis. https://doi.org/10.1016/s0370-2693(98)00660-1

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