Work

Scale and electroweak first-order phase transitions

Year: 2015

Type: article

Abstract: We consider phase transitions in the standard model (SM) without the Higgs mass term, which is coupled through a Higgs portal term to an SM singlet, classically scale-invariant gauge sector with SM singlet scalar fields. At lower energies the gauge-invariant scalar bilinear in the hidden sector forms a condensate, dynamically creating a robust energy scale, which is transmitted through the Higgs portal term to the SM sector. A scale phase transition is a transition between phases with zero and nonzero condensates. An interplay between the electroweak (EW) and scale phase transitions is therefore expected. We find that in a certain parameter space both the EW and scale phase transitions can be a strong first-order phase transition. The result is obtained by means of an effective theory for the condensation of the scalar bilinear in the mean field approximation.

Source: Progress of Theoretical and Experimental Physics

DOI: 10.1093/ptep/ptv114

Authors: Jisuke Kubo, Masatoshi Yamada

Institution: Kanazawa University

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $979

Funders: Sponsoring Consortium for Open Access Publishing in Particle Physics, Max Planck Institute for Nuclear Physics, Japan Society for the Promotion of Science