Symmetry non-restoration via order 10(-10) B and L asymmetries

McDonald, John (1999) Symmetry non-restoration via order 10(-10) B and L asymmetries. Physics Letters B, 463 (2-4). pp. 225-229. ISSN 0370-2693

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Abstract

It has been observed that a large lepton asymmetry, n(L)/s approximate to 0.1, can prevent the Higgs expectation value from going to zero at high temperature, resulting in the non-restoration of the SU(2) x U(1) gauge symmetry and other symmetries. This could allow for the elimination of domain walls and other dangerous topological defects. Here we show that if the reheating temperature after inflation, T-R is sufficiently low then symmetry non-restoration will occur with an asymmetry of the order of the observed baryon asymmetry, n(B)/s approximate to 10(-10). For this to occur T-R less than or similar to 1 GeV is necessary. Remarkably, this happens to be the reheating temperature expected in Affleck-Dine baryogenesis along a d = 6 flat direction of the MSSM. As an example, we show that this can neatly solve the Z(3), domain wall problem of the NMSSM.

Item Type: Journal Article
Journal or Publication Title: Physics Letters B
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 83236
Deposited By: ep_importer_pure
Deposited On: 29 Nov 2016 09:44
Refereed?: Yes
Published?: Published
Last Modified: 22 Jan 2020 03:24
URI: https://eprints.lancs.ac.uk/id/eprint/83236

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