Journal
PHYSICS LETTERS B
Volume 735, Issue -, Pages 295-300Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2014.06.048
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Funding
- Ministry of Science and Technology of R.O.C. [NSC-100-2628-M-008-003-MY4, NSC-102-2811-M-008-019]
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The Georgi-Machacek model extends the standard model Higgs sector by adding two isospin triplet scalar fields and imposing global SU(2)(R) 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 rho 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 O(10) GeV, opening a possibility to realize successful electroweak baryogenesis. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
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