Electroweak phase transition in an extension of the Standard Model with scalar color octet

Abstract

In an extension of the Standard Model with a scalar color octet, the possibility of the strongly first-order electroweak phase transition is studied, by examining the finite-temperature effective Higgs potential at the one-loop level. It is found that there are wide regions in the parameter space that allow the strongly first-order electroweak phase transition, where the Higgs boson mass is larger than the experimental lower bound of 115 GeV, and the masses of the scalar color octet is around 200 GeV. The parameter regions may be explored at the LHC with respect to the electroweak phase transition.

20 pages, 9 figures, PRD

References in corpus (8)

• Novel Effects in Electroweak Breaking from a Hidden Sector
• Flavor Changing Neutral Currents, an Extended Scalar Sector, and the Higgs Production Rate at the LHC
• Scalar Particle Contribution to Higgs Production via Gluon Fusion at NLO
• Color-octet scalars at the LHC
• Color Octet Scalar Production at the LHC
• Grand Unification and Light Color-Octet Scalars at the LHC
• Dark energy, the colored anti-de Sitter vacuum, and LHC phenomenology
• Color Octet Scalar Bound States at the LHC

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• Baryogenesis in the Zee-Babu model with arbitrary $\xi$ gauge
• Multi-period structure of electro-weak phase transition in the 3-3-1-1 model
• Dual electroweak phase transition in the two-Higgs-doublet model with the $S_3$ discrete symmetry
• Early Universe in the SU(3)_L X U(1)_X electroweak models
• Electroweak phase transition via Dilaton in Two-Time Physics
• Electro-weak Phase Transition With Three Phases in The $SU(2{)}_1\otimes SU(2{)}_2\otimes U(1{)}_Y$ Model
• Sphaleron and gravitational wave with the Higgs-Dilaton potential in the Standard Model Two-Time Physics
• Twin electroweak bubble nucleation and gravitational wave under the $S_3$ symmetry of two-Higgs-doublet model