Electroweak phase transition in theμνSSM

2010/04/30 by Daniel J. H. Chung, Andrew J. Long · 1 citation
Physics and Astronomy · #Baryogenesis #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Electroweak interaction #Leptogenesis #Lepton #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #astro-ph.CO #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.81.123531

published as Phys.Rev.D81:123531,2010 · 36 pages, 10 figures

openalex publication_date 2010/06/29 · arxiv created 2010/09/22 · arxiv updated 2015/03/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

An extension of the minimal supersymmetric standard model called the \ensuremathμ\ensuremathνSSM does not allow a conventional thermal leptogenesis scenario because of the low scale seesaw that it utilizes. Hence, we investigate the possibility of electroweak baryogenesis. Specifically, we identify a parameter region for which the electroweak phase transition is sufficiently strongly first order to realize electroweak baryogenesis. In addition to transitions that are similar to those in the next-to-minimal supersymmetric standard model, we find a novel class of phase transitions in which there is a rotation in the singlet vector space.

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• Probing the cosmological constant and phase transitions with dark matter