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We study the finite-temperature effective potential of the Minimal Supersymmetric Standard Model, in the limit of only one light Higgs boson. Because of the large top Yukawa coupling, there can be significant differences with respect to the…

High Energy Physics - Phenomenology · Physics 2009-10-22 J. R. Espinosa , M. Quiros , F. Zwirner

We investigate the connection between the entanglement entropy in scattering processes and the dynamics of electroweak phase transitions. Recent work has shown that the scattering entanglement entropy can provide new insight into Standard…

High Energy Physics - Phenomenology · Physics 2025-11-25 Jia Liu , Masanori Tanaka , Xiao-Ping Wang , Jing-Jun Zhang , Zifan Zheng

We reconsider the strength of the electroweak phase transition (EWPT) in the inert doublet dark matter model, using a quantitatively accurate form for the one-loop finite temperature effective potential, taking into account relevant…

High Energy Physics - Phenomenology · Physics 2015-03-20 Debasish Borah , James M. Cline

We consider the Type-II seesaw model extended with another Higgs doublet, which is odd under the $Z_2$ symmetry. We look for the possibility of triggering the electroweak symmetry breaking via radiative effects. The Higgs mass parameter…

High Energy Physics - Phenomenology · Physics 2024-01-11 Shilpa Jangid , Hiroshi Okada

Using dimensional reduction we construct an effective 3D theory of the Minimal Supersymmetric Standard Model at finite temperature. The final effective theory is obtained after three successive stages of integration out of massive…

High Energy Physics - Phenomenology · Physics 2016-09-06 Marta Losada

We discuss the features of a two-Higgs doublet model exhibiting a two stage phase transition. At finite temperatures electric charge violating stationary points are developed. In conjunction with {\em CP} violation in the Higgs or the…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. B. Lahanas , V. C. Spanos , Vasilios Zarikas

The full one-loop corrections, both the weak and QED corrections, to the process $e^+ e^- \to Z \phi $ ($\phi=h^0,H^0$) in the two Higgs doublet model (2HDM) at the Higgs factories are presented. Up to the $O(\alpha_{em})$ level, the…

High Energy Physics - Phenomenology · Physics 2021-06-02 Wenhai Xie , R. Benbrik , Abdeljalil Habjia , Souad Taj , Bin Gong , Qi-Shu Yan

We review the status of non-perturbative lattice studies of the electroweak phase transition. In the Standard Model, the complete phase diagram has been reliably determined, and the conclusion is that there is no phase transition at all for…

High Energy Physics - Lattice · Physics 2014-11-17 M. Laine , K. Rummukainen

We compute the complete one-loop finite temperature effective potential for electroweak symmetry breaking in the Standard Model with a Higgs potential supplemented by higher dimensional operators as generated for instance in composite Higgs…

High Energy Physics - Phenomenology · Physics 2008-11-26 C. Delaunay , C. Grojean , J. D. Wells

The baryon density which may be produced during the electroweak phase transition in supersymmetric models is computed, taking into account the previously neglected effects of transport, strong and weak anomalous fermion number violation,…

High Energy Physics - Phenomenology · Physics 2009-10-28 Patrick Huet , Ann E. Nelson

We study the dynamics of electroweak phase transition in a simple extension of the Standard Model where the Higgs sector is extended by adding an $SU(2)_L$-triplet with hypercharge Y=2. By making random scans over the parameters of the…

High Energy Physics - Phenomenology · Physics 2021-04-21 Mohammad Javad Kazemi , Shehu AbdusSalam

The real singlet extension of the Standard Model (SM), RxSM, is one of the simplest Beyond-the-Standard Model (BSM) theories that can accommodate a strong first-order electroweak phase transition (SFOEWPT). We survey the possible thermal…

High Energy Physics - Phenomenology · Physics 2025-10-15 Johannes Braathen , Sven Heinemeyer , Carlos Pulido Boatella , Alain Verduras Schaeidt

The Higgs potentials of extended Higgs sectors exhibit a complex and interesting vacuum structure. When travelling back in time, i.e. going to higher temperatures, the structure may change and exhibit interesting phase patterns and…

High Energy Physics - Phenomenology · Physics 2024-03-06 Mayumi Aoki , Lisa Biermann , Christoph Borschensky , Igor P. Ivanov , Margarete Mühlleitner , Hiroto Shibuya

We reexamine the strength of the first order phase transition in the electroweak theory supplemented by an extra Higgs doublet. The finite-temperature effective potential, $V_{eff}$, is computed to one-loop order, including the summation of…

High Energy Physics - Phenomenology · Physics 2009-10-28 James M. Cline , Pierre-Anthony Lemieux

In this paper, we investigate the possibility of a strong first-order electroweak phase transition (SFOEWPT) in the model `CP in the Dark'. The Higgs sector of the model consists of two scalar doublets and one scalar singlet with a specific…

High Energy Physics - Phenomenology · Physics 2023-06-14 Lisa Biermann , Margarete Mühlleitner , Jonas Müller

Spontaneous CP violation motivates the introduction of two Higgs doublets in the electroweak theory. Such a simple extension of the standard model has three neutral Higgs bosons and a pair charged Higgs, especially it leads to rich…

High Energy Physics - Phenomenology · Physics 2015-03-17 Shou-Shan Bao , Yong Tang , Yue-Liang Wu

We study the MSSM finite temperature electroweak phase transition with lattice Monte Carlo simulations, for a large Higgs mass (m_H ~ 95 GeV) and light stop masses (m_tR ~ 150...160 GeV). We employ a 3d effective field theory approach,…

High Energy Physics - Lattice · Physics 2009-10-31 M. Laine , K. Rummukainen

We perform a comprehensive phenomenological analysis of the Scale Invariant Two Higgs Doublet Model (\textit{SI2HDM})~\cite{Lee:2012jn}. In this framework, the electroweak symmetry breaking is triggered radiatively, and the entire scalar…

High Energy Physics - Phenomenology · Physics 2025-11-11 Nabil Baouche , Amine Ahriche

In the standard scenario, the electroweak phase transition is a first order phase transition which completes by the nucleation of critical bubbles. Recently, there has been speculation that the standard picture of the electroweak phase…

High Energy Physics - Phenomenology · Physics 2007-05-23 Greg W. Anderson

We use transport equations to compute the evolution of the quark plasma at the electroweak phase transition in the two-doublet Higgs model, obtaining in a more rigorous and quantitatively accurate way results consistent with previous work.…

High Energy Physics - Phenomenology · Physics 2007-05-23 Gian Franco Bonini