Low Energy Leptogenesis in Left-Right Symmetric Models

Details Low Energy Leptogenesis in Left-Right Symmetric Models Low Energy Leptogenesis in Left-Right Symmetric Models

1994-08-11

arxiv.org/abs/hep-ph/9408271v1

Phys.Lett. B385 (1996) 175-180

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages (Latex file) - 1 postscript figure appended

Scientific paper

10.1016/0370-2693(96)00892-1

We propose a new mechanism for baryogenesis. We study the effective potential of left-right extension of the standard model and show that there can be a first order phase transition at the left-right symmetry breaking and hence $(B-L)$ symmetry breaking scale, which is around TeV in our scenario. As a result, although $(B-L)$ violating interactions are in equilibrium at this scale, enough $(B-L)$ asymmetry may be generated. This $(B-L)$ asymmetry is then converted to baryon asymmetry during the anomalous electroweak process. If right handed gauge bosons are seen in the TeV scale, then we argue that this will be the only consistent mechanism to generate baryon asymmetry of the universe.

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