A strong first order phase transition in the UMSSM

preprint2010arXivOpen access

In this work, the electroweak phase transition (EWPT) strength has been investigated within the $U(1)$ extended Minimal Supersymmetric Standard Model (UMSSM) without introducing any exotic fields. We found that the EWPT could be strongly first order for reasonable values of the lightest Higgs and neutralino masses.

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A strong first order phase transition in the UMSSM

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