Simulations of Cold Electroweak Baryogenesis: Finite time quenches

Details Simulations of Cold Electroweak Baryogenesis: Finite time quenches Simulations of Cold Electroweak Baryogenesis: Finite time quenches

2006-10-09

arxiv.org/abs/hep-ph/0610096v1

JHEP 0701:034,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 20 figures

Scientific paper

10.1088/1126-6708/2007/01/034

The electroweak symmetry breaking transition may supply the appropriate out-of-equilibrium conditions for baryogenesis if it is triggered sufficiently fast. This can happen at the end of low-scale inflation, prompting baryogenesis to occur during tachyonic preheating of the Universe, when the potential energy of the inflaton is transfered into Standard Model particles. With the proper amount of CP-violation present, the observed baryon number asymmetry can be reproduced. Within this framework of Cold Electroweak Baryogenesis, we study the dependence of the generated baryon asymmetry on the speed of the quenching transition. We find that there is a separation between ``fast'' and ``slow'' quenches, which can be used to put bounds on the allowed Higgs-inflaton coupling. We also clarify the strong Higgs mass dependence of the asymmetry reported in a companion paper (hep-ph/0604263).

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