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We study the bulk mass effects on the electroweak phase transition at finite temperature in a five dimensional SU(3) gauge-Higgs unification model on an orbifold. We investigate whether the Higgs mass satisfying the experimental lower bound…

High Energy Physics - Phenomenology · Physics 2009-11-11 Nobuhito Maru , Kazunori Takenaga

We carry out lattice simulations of a cosmological electroweak phase transition for a Higgs mass m_h ~ 126 GeV. The analysis is based on a dimensionally reduced effective theory for an MSSM-like scenario including a relatively light…

High Energy Physics - Phenomenology · Physics 2015-06-12 M. Laine , G. Nardini , K. Rummukainen

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 study the finite temperature electroweak phase transition with lattice perturbation theory and Monte Carlo techniques. Dimensional reduction is used to approximate the full four-dimensional SU(2) + a fundamental doublet Higgs theory by…

High Energy Physics - Phenomenology · Physics 2009-10-22 K. Kajantie , K. Rummukainen , M. Shaposhnikov

The continuum 3d SU(2)$\times$U(1)+Higgs theory is an effective theory for a large class of 4d high-temperature gauge theories, including the minimal standard model and some of its supersymmetric extensions. We study the effects of the U(1)…

High Energy Physics - Lattice · Physics 2008-11-26 K. Kajantie , M. Laine , K. Rummukainen , M. Shaposhnikov

Wave functions and the screening mass spectrum in the 3D SU(2)-Higgs model near to the phase transition line below the endpoint and in the crossover region are calculated. In the crossover region the changing spectrum versus temperature is…

High Energy Physics - Lattice · Physics 2009-10-31 E. -M. Ilgenfritz , A. Schiller , C. Strecha

The electroweak phase transition is considered in framework of the reduced minimal 3-3-1 model (RM331). Structure of phase transition in this model is divided into two periods. The first period is the phase transition SU(3) ---> SU(2) at…

High Energy Physics - Phenomenology · Physics 2013-11-18 Vo Quoc Phong , Hoang Ngoc Long , Vo Thanh Van

The dynamics of five dimensional Wilson line phases at finite temperature is studied in the one-loop approximation. We show that at temperatures of order $T\sim 1/L$, where L is the length of the compact space, the gauge symmetry is always…

High Energy Physics - Phenomenology · Physics 2007-05-23 Giuliano Panico , Marco Serone

We review recent developments in real-time simulations of SU(2)-Higgs theory near the electroweak transition and related topics.

High Energy Physics - Lattice · Physics 2016-09-01 Jan Smit

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…

High Energy Physics - Phenomenology · Physics 2010-04-14 S. W. Ham , Seong-a Shim , S. K. Oh

We study models of strong first order `low' temperature electroweak phase transition. To achieve this we propose a class of Higgs effective potential models which preserve the known features of the present day massive phase. However, the…

High Energy Physics - Phenomenology · Physics 2012-05-07 Jeremiah Birrell , Johann Rafelski

The electroweak phase transition in the magnetic and hypermagnetic fields is studied in the Standard Model on the base of investigation of symmetry behaviour within the consistent effective potential of the scalar and magnetic fields at…

High Energy Physics - Theory · Physics 2007-05-23 V. Skalozub , V. Demchik

In our nonperturbative lattice investigation we study the interface tension of the finite-temperature electroweak phase transition. In this analysis the Higgs mass has been chosen to be about $35$ GeV. At the transition point of a finite…

High Energy Physics - Lattice · Physics 2009-10-28 F. Csikor , Z. Fodor , J. Hein , J. Heitger

With the physical Higgs mass the Standard Model symmetry restoration phase transition is a smooth cross-over. We study the thermodynamics of the cross-over using numerical lattice Monte Carlo simulations of an effective SU(2) X U(1) gauge +…

High Energy Physics - Phenomenology · Physics 2016-01-13 Michela D'Onofrio , Kari Rummukainen

The dynamics of five dimensional Wilson line phases at finite temperature is studied in the one-loop approximation. We show that at temperatures of order T \sim 1/L, where L is the length of the compact space, the gauge symmetry is always…

High Energy Physics - Phenomenology · Physics 2010-02-03 Giuliano Panico , Marco Serone

High temperature reduction of the SU(2) Higgs model is realised by partially integrating its partition function. Various approximate forms of the effective theory resulting from the integration over nonstatic fields and the static electric…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. Jakovac , A. Patkos

The Higgs potential of the standard model with an additional real Higgs singlet is studied in order to examine if it may allow the strongly first order electroweak phase transition. It is found that there are parameter values for which this…

High Energy Physics - Phenomenology · Physics 2011-08-23 S. W. Ham , Y. S. Jeong , S. K. Oh

The electroweak phase transition is investigated by means of the perturbatively calculated high temperature effective potential. An analytic result to order $g^4,\lambda^2$ is presented for the Abelian Higgs model, the SU(2)-Higgs model and…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Hebecker

We study the phase transition in gauge-Higgs unification at finite temperature. In particular, we obtain the strong first order electroweak phase transition for a simple matter content yielding the correct order of Higgs mass at zero…

High Energy Physics - Theory · Physics 2008-11-26 Nobuhito Maru , Kazunori Takenaga

We perform a detailed study of the phase diagram of the lattice Higgs SU(2) model with fixed Higgs field length. Consistently with previsions based on the Fradkin Shenker theorem we find a first order transition line with an endpoint whose…

High Energy Physics - Lattice · Physics 2010-02-17 C. Bonati , G. Cossu , M. D'Elia , A. Di Giacomo