Leptogenesis via Higgs condensate relaxation

Louis Yang, Lauren Pearce, and Alexander Kusenko

Phys. Rev. D 92, 043506 – Published 6 August 2015

Abstract

An epoch of Higgs relaxation may occur in the early universe during or immediately following postinflationary reheating. It has recently been pointed out that leptogenesis may occur in minimal extensions of the standard model during this epoch [A. Kusenko, L. Pearce, and L. Yang, Phys. Rev. Lett. 114, 061302 (2015)]. We analyze Higgs relaxation taking into account the effects of perturbative and nonperturbative decays of the Higgs condensate, and we present a detailed derivation of the relevant kinetic equations and of the relevant particle interaction cross sections. We identify the parameter space in which a sufficiently large asymmetry is generated.

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Received 28 May 2015

DOI:https://doi.org/10.1103/PhysRevD.92.043506

Authors & Affiliations

Louis Yang¹, Lauren Pearce², and Alexander Kusenko^1,3

¹Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547, USA
²William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
³Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa, Chiba 277-8568, Japan

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Vol. 92, Iss. 4 — 15 August 2015

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Physical Review D

covering particles, fields, gravitation, and cosmology