Simulations of Cold Electroweak Baryogenesis: finding the optimal quench time

Mou, Zong-Gang and Saffin, Paul M. and Tranberg, Anders (2017) Simulations of Cold Electroweak Baryogenesis: finding the optimal quench time. Journal of High Energy Physics, 2017 (7). pp. 1-10. ISSN 1029-8479

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We revisit the numerical computation of the baryon asymmetry from Cold

Electroweak Baryogenesis given the physical Higgs mass. We investigate the dependence of the asymmetry on the speed at which electroweak symmetry breaking takes place. The maximum asymmetry does not occur for arbitrarily fast quenches, but at quench times of about τq ≃ 16m_H^−1, with no asymmetry created for quenches slower than τq > 30m_H^−1. Curiously, we also find that the overall sign of the asymmetry depends on the quench time.

Item Type: Article
Keywords: Cosmology of Theories beyond the SM; Lattice Quantum Field Theory; CP violation; Nonperturbative Effects
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: 10.1007/JHEP07(2017)010
Depositing User: Saffin, Dr Paul
Date Deposited: 27 Jul 2017 08:21
Last Modified: 12 Oct 2017 23:33

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