Simulations of cold electroweak baryogenesis: Finite time quenches

Tranberg, Anders, Smit, Jan and Hindmarsh, Mark (2007) Simulations of cold electroweak baryogenesis: Finite time quenches. Journal of High Energy Physics, 2007 (1). p. 19. ISSN 1126-6708

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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 [1].

Item Type: Article
Additional Information: Article Number: 034
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Mark Hindmarsh
Date Deposited: 06 Feb 2012 20:38
Last Modified: 03 Jul 2019 00:21

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