scholarly journals Effects of two inert scalar doublets on Higgs boson interactions and the electroweak phase transition

2015 ◽  
Vol 92 (3) ◽  
Author(s):  
Amine Ahriche ◽  
Gaber Faisel ◽  
Shu-Yu Ho ◽  
Salah Nasri ◽  
Jusak Tandean
Keyword(s):  
Phase Transition ◽  
Higgs Boson ◽  
Electroweak Phase Transition

scholarly journals The Electroweak Phase Transition in a Spontaneously Magnetized Plasma

2019 ◽  
Vol 64 (8) ◽  
pp. 710
Author(s):  
P. Minaiev ◽  
V. Skalozub
Keyword(s):  
Phase Transition ◽  
Higgs Boson ◽  
Magnetic Fields ◽  
Spontaneous Magnetization ◽  
Higgs Doublet ◽  
Magnetized Plasma ◽  
Boson Mass ◽  
Spontaneous Generation ◽  
Electroweak Phase Transition ◽  
First Order

We investigate the electroweak phase transition (EWPT) in the Minimal (One Higgs doublet) Standard Model (SM) with account for the spontaneous generation of magnetic and chromo-magnetic fields. As it is known, in the SM for the mass of a Higgs boson greater than 75 GeV, this phase transition is of the second order. But, according to Sakharov’s conditions for the formation of the baryon asymmetry in the early Universe, it has to be strongly of the first order. In the Two Higgs doublets SM, there is a parametric space, where the first-order phase transition is realized for the realistic Higgs boson mass mH = 125 GeV. On the other hand, in the hot Universe, the spontaneous magnetization of a plasma had happened. The spontaneously generated (chromo) magnetic fields are temperature-dependent. They influence the EWРT. The color chromomagnetic fields B3 and B8 are created spontaneously in the gluon sector of QCD at a temperature T > Td higher the deconfinement temperature Td. The usual magnetic field H has also to be spontaneously generated. For T close to the TEWPT , these magnetic fields could change the kind of the phase transition.

scholarly journals Cosmological time evolution of the Higgs mass and gravitational waves

2020 ◽  
Vol 35 (02n03) ◽  
pp. 2040035
Author(s):  
Xavier Calmet
Keyword(s):  
Phase Transition ◽  
Higgs Boson ◽  
Standard Model ◽  
Gravitational Waves ◽  
Time Evolution ◽  
Higgs Mass ◽  
Coupling Constant ◽  
Electroweak Phase Transition ◽  
Cosmological Time ◽  
The Standard Model

We point out that gravitational wave detectors such as LISA have the potential of probing a cosmological time evolution of the Higgs boson self-coupling constant [Formula: see text] and thus the Higgs boson’s mass [Formula: see text]. The phase transition of the Standard Model could have been a first order one if the Higgs mass was below 72 GeV at a temperature [Formula: see text] GeV. Gravitational waves could thus have been produced during the electroweak phase transition. A discovery by LISA of a stochastic background of gravitational waves with a characteristic frequency [Formula: see text] Hz could be interpreted as a sign that the Higgs boson self-coupling constant was smaller in the past. This interpretation would be particularly tempting if the Large Hadron Collider did not discover any physics beyond the Standard Model by the time such waves are seen. The same mechanism could also account for baryogenesis.

scholarly journals 125 GeV Higgs boson and electroweak phase transition model classes

2013 ◽  
Vol 87 (2) ◽  
Author(s):  
Daniel J. H. Chung ◽  
Andrew J. Long ◽  
Lian-Tao Wang
Keyword(s):  
Phase Transition ◽  
Higgs Boson ◽  
Transition Model ◽  
Electroweak Phase Transition

scholarly journals Exotic Higgs boson decays and the electroweak phase transition

2020 ◽  
Vol 101 (11) ◽  
Author(s):  
Jonathan Kozaczuk ◽  
Michael J. Ramsey-Musolf ◽  
Jessie Shelton
Keyword(s):  
Phase Transition ◽  
Higgs Boson ◽  
Electroweak Phase Transition

scholarly journals Dark Matter production from relativistic bubble walls

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Aleksandr Azatov ◽  
Miguel Vanvlasselaer ◽  
Wen Yin
Keyword(s):  
Phase Transition ◽  
Dark Matter ◽  
Electroweak Phase Transition ◽  
First Order ◽  
Matter Production ◽  
First Order Phase Transition ◽  
Relic Abundance ◽  
Higgs Portal ◽  
First Order Phase ◽  
Gravitational Background

Abstract In this paper we present a novel mechanism for producing the observed Dark Matter (DM) relic abundance during the First Order Phase Transition (FOPT) in the early universe. We show that the bubble expansion with ultra-relativistic velocities can lead to the abundance of DM particles with masses much larger than the scale of the transition. We study this non-thermal production mechanism in the context of a generic phase transition and the electroweak phase transition. The application of the mechanism to the Higgs portal DM as well as the signal in the Stochastic Gravitational Background are discussed.

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