PeV scale Left-Right symmetry and baryon asymmetry of the Universe

Abstract

We study the cosmology of two versions of supersymmetric Left-Right symmetric model. The scale of the $B-L$ symmetry breaking in these models is naturally low, $10^4-10^6$ GeV. Spontaneous breakdown of parity is accompanied by a first order phase transition. We simulate the domain walls of the phase transition and show that they provide requisite conditions, specifically, $CP$ violating phase needed for leptogenesis. Additionally soft resonant leptogenesis is conditionally viable in the two models considered. Some of the parameters in the soft supersymmetry breaking terms are shown to be constrained from these considerations. It is argued that the models may be testable in upcoming collider and cosmology experiments.

25 pages, 2 figures, revtex4, minor clarifications, references added, conclusion remains same, to appear in Nuclear Physics B

References in corpus (5)

• Gravitational Waves from Phase Transitions at the Electroweak Scale and Beyond
• B-L Cosmic strings and Baryogenesis
• Cosmology in a supersymmetric model with gauged $B-L$
• SU(4)_C X SU(2)_L X SU(2)_R Models With C-parity
• Naturalness of parity breaking in a supersymmetric SO(10) model

Cited by in corpus (4)

• Left-Right Symmetry Breaking and Gravitational Waves : A Tale of Two Phase Transitions
• Domain walls and CP violation with left right supersymmetry:implications for leptogenesis and electron EDM
• Gauge mediated supersymmetry breaking and the cosmology of Left-Right symmetric model
• Fatjet signatures of heavy neutrinos and heavy leptons in a left-right model with universal seesaw at the HL-LHC