Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-11-16
JHEP0804:029,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
33 pages, 8 figures
Scientific paper
10.1088/1126-6708/2008/04/029
We compute the complete one-loop finite temperature effective potential for electroweak symmetry breaking in the Standard Model with a Higgs potential supplemented by higher dimensional operators as generated for instance in composite Higgs and Little Higgs models. We detail the resolution of several issues that arise, such as the cancellation of infrared divergences at higher order and imaginary contributions to the potential. We follow the dynamics of the phase transition, including the nucleation of bubbles and the effects of supercooling. We characterize the region of parameter space consistent with a strong first-order phase transition which may be relevant to electroweak baryogenesis. Finally, we investigate the prospects of present and future gravity wave detectors to see the effects of a strong first-order electroweak phase transition.
Delaunay Cedric
Grojean Christophe
Wells James Daniel
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