Electroweak Phase Transition in Georgi-Machacek Model
High Energy Physics - Phenomenology
2015-06-19 v1
Abstract
The Georgi-Machacek model extends the standard model Higgs sector by adding two isospin triplet scalar fields and imposing global SU(2) symmetry on them. A feature of the model is that the triplets can acquire a large vacuum expectation value without conflicting with the current experimental bound on the parameter. We investigate the electroweak phase transition in the Georgi-Machacek model by evaluating the finite-temperature effective potential of the Higgs sector. The electroweak phase transition can be sufficiently strong in a large parameter space when the triplets acquire a vacuum expectation value of GeV, opening a possibility to realize successful electroweak baryogenesis.
Cite
@article{arxiv.1404.5182,
title = {Electroweak Phase Transition in Georgi-Machacek Model},
author = {Cheng-Wei Chiang and Toshifumi Yamada},
journal= {arXiv preprint arXiv:1404.5182},
year = {2015}
}