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.

Ring-diagram summations in the finite-temperature effective potential

1993 ◽  
Vol 71 (5-6) ◽  
pp. 227-236 ◽  
Author(s):  
M. E. Carrington
Keyword(s):  
Phase Transition ◽  
Standard Model ◽  
Effective Potential ◽  
Finite Temperature ◽  
Electroweak Phase Transition ◽  
First Order ◽  
Ring Diagram ◽  
First Order Phase Transition ◽  
The Standard Model ◽  
The One

There has been much recent interest in the finite-temperature effective potential of the standard model in the context of the electroweak phase transition. We review the calculation of the effective potential with particular emphasis on the validity of the expansions that are used. The presence of a term that is cubic in the Higgs condensate in the one-loop effective potential appears to indicate a first-order electroweak phase transition. However, in the high-temperature regime, the infrared singularities inherent in massless models produce cubic terms that are of the same order in the coupling. In this paper, we discuss the inclusion of an infinite set of these terms via the ring-diagram summation, and show that the standard model has a first-order phase transition in the weak coupling expansion.

scholarly journals PRECISION MASS DETERMINATION OF THE HIGGS BOSON AT PHOTON–PHOTON COLLIDERS

2000 ◽  
Vol 15 (16) ◽  
pp. 2605-2611 ◽  
Author(s):  
TOMOMI OHGAKI
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Higgs Mass ◽  
Statistical Error ◽  
High Energy ◽  
Boson Mass ◽  
Total Width ◽  
Mass Determination ◽  
The Standard Model

We demonstrate a measurement of the Higgs boson mass by the method of energy scanning at photon–photon colliders, using the high energy edge of the photon spectrum. With an integrated luminosity of 50 fb-1 it is possible to measure the standard model Higgs mass to within 110 MeV in photon–photon collisions for mh=100 GeV. As for the total width of the Higgs boson, the statistical error ΔΓh/Γh SM=0.06 is expected for mh=100 GeV, if both Γ(h→γγ) and [Formula: see text] are fixed at the predicted standard model value.

scholarly journals Low temperature electroweak phase transition in the Standard Model with hidden scale invariance

2018 ◽  
Vol 776 ◽  
pp. 48-53 ◽  
Author(s):  
Suntharan Arunasalam ◽  
Archil Kobakhidze ◽  
Cyril Lagger ◽  
Shelley Liang ◽  
Albert Zhou
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Standard Model ◽  
Scale Invariance ◽  
Electroweak Phase Transition ◽  
The Standard Model

scholarly journals Limiting first-order phase transitions in dark gauge sectors from gravitational waves experiments

2017 ◽  
Vol 32 (08) ◽  
pp. 1750049 ◽  
Author(s):  
Andrea Addazi
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Standard Model ◽  
Gravitational Waves ◽  
Parameter Space ◽  
Higgs Potential ◽  
Electroweak Phase Transition ◽  
First Order ◽  
First Order Phase

We discuss the possibility to indirectly test first-order phase transitions of hidden sectors. We study the interesting example of a Dark Standard Model (D-SM) with a deformed parameter space in the Higgs potential. A dark electroweak phase transition can be limited from next future experiments like eLISA and DECIGO.

scholarly journals Gravitational waves from the phase transition of a nonlinearly realized electroweak gauge symmetry

2017 ◽  
Vol 26 (10) ◽  
pp. 1750114 ◽  
Author(s):  
Archil Kobakhidze ◽  
Adrian Manning ◽  
Jason Yue
Keyword(s):  
Phase Transition ◽  
Gravitational Waves ◽  
Electroweak Symmetry ◽  
Frequency Range ◽  
Electroweak Phase Transition ◽  
First Order ◽  
Wave Measurements ◽  
Future Space ◽  
The Standard Model ◽  
New Interactions

Within the Standard Model with nonlinearly realized electroweak symmetry, the LHC Higgs boson may reside in a singlet representation of the gauge group. Several new interactions are then allowed, including anomalous Higgs self-couplings, which may drive the electroweak phase transition to be strongly first-order. In this paper, we investigate the cosmological electroweak phase transition in a simplified model with an anomalous Higgs cubic self-coupling. We look at the feasibility of detecting gravitational waves produced during such a transition in the early universe by future space-based experiments. We demonstrate an intriguing interplay between collider measurements of the Higgs self-coupling and these potential gravitational wave measurements. We find that for the range of relatively large cubic couplings, [Formula: see text], [Formula: see text]mHz frequency gravitational waves can be observed by eLISA, while BBO will potentially be able to detect waves in a wider frequency range, [Formula: see text][Formula: see text]mHz.

scholarly journals Lepton-mediated electroweak baryogenesis, gravitational waves and the 4τ final state at the collider

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Ke-Pan Xie
Keyword(s):  
Phase Transition ◽  
Gravitational Waves ◽  
Parameter Space ◽  
Baryon Asymmetry ◽  
Hadron Colliders ◽  
Electroweak Phase Transition ◽  
Final State ◽  
First Order ◽  
The Standard Model ◽  
The Universe

Abstract An electroweak baryogenesis (EWBG) mechanism mediated by τ lepton transport is proposed. We extend the Standard Model with a real singlet scalar S to trigger the strong first-order electroweak phase transition (SFOEWPT), and with a set of leptophilic dimension-5 operators to provide sufficient CP violating source. We demonstrate this model is able to generate the observed baryon asymmetry of the universe. This scenario is experimentally testable via either the SFOEWPT gravitational wave signals at the next-generation space-based detectors, or the pp → h* → SS → 4τ process (where h* is an off-shell Higgs) at the hadron colliders. A detailed collider simulation shows that a considerable fraction of parameter space can be probed at the HL-LHC, while almost the whole parameter space allowed by EWBG can be reached by the 27 TeV HE-LHC.

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