Hydrodynamics of the electroweak phase transition in an extension of the Standard Model with dimension-6 interactions

Extensions of the Standard Model are being considered as viable settings for a first-order electroweak phase transition which would satisfy Sakharov's three conditions for the generation of the baryon asymmetry of the Universe. These extensions would provide a sufficiently strong phase transiti...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2010-11, Vol.259 (1), p.012048
Main Authors: Sopena, M, Huber, SJ
Format: Article
Language:English
Subjects:
Asymmetry
Baryons
CP violation
Electroweak model
Fluid mechanics
Hydrodynamic equations
Hydrodynamics
Lower bounds
Phase transitions
Physics
Universe
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Extensions of the Standard Model are being considered as viable settings for a first-order electroweak phase transition which would satisfy Sakharov's three conditions for the generation of the baryon asymmetry of the Universe. These extensions would provide a sufficiently strong phase transition and remove the main obstacles which appear in the context of the Standard Model: A far-too-high lower bound on the Higgs mass, immediate wipeout of the newly-created baryon asymmetry and insufficient CP violation. We apply standard semiclassical treatments of the hydrodynamics of a first-order phase transition to the case of a recently-introduced dimension-6 extension of the Standard Model which (within the present bounds on the Higgs mass) could produce the observed baryon asymmetry of the Universe. We express the friction term in the hydrodynamic equations in terms of the particle content of the model and produce predictions for the velocity of the expanding bubble wall in the stationary regime.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/259/1/012048