The Electroweak Phase Transition in Ultra Minimal Technicolor

Details The Electroweak Phase Transition in Ultra Minimal Technicolor The Electroweak Phase Transition in Ultra Minimal Technicolor

2009-03-18

arxiv.org/abs/0903.3115v1

Phys.Rev.D79:095008,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

38 RevTeX pages, 9 figures

Scientific paper

10.1103/PhysRevD.79.095008

We unveil the temperature-dependent electroweak phase transition in new extensions of the Standard Model in which the electroweak symmetry is spontaneously broken via strongly coupled, nearly-conformal dynamics achieved by the means of multiple matter representations. In particular, we focus on the low energy effective theory introduced to describe Ultra Minimal Walking Technicolor at the phase transition. Using the one-loop effective potential with ring improvement, we identify regions of parameter space which yield a strong first order transition. A striking feature of the model is the existence of a second phase transition associated to the electroweak-singlet sector. The interplay between these two transitions leads to an extremely rich phase diagram.

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