Is There a Hot Electroweak Phase Transition at m_H\gsim m_W?

1996/05/12 by K. Kajantie, M. Laine, K. Rummukainen +1 · 5 citations
Physics and Astronomy · #hep-ph #hep-lat #hep-th

paper · pdf · doi:10.1103/physrevlett.77.2887

published as Phys.Rev.Lett.77:2887-2890,1996 · 9 pages, 5 eps figures

arxiv created 1996/05/12 · arxiv updated 2011/05/05

Abstract

We provide non-perturbative evidence for the fact that there is no hot electroweak phase transition at large Higgs masses, m_H = 95, 120 and 180 GeV. This means that the line of first order phase transitions separating the symmetric and broken phases at small m_H has an end point m_H,c. In the minimal standard electroweak theory 70 GeV <m_H,c< 95 GeV and most likely m_H,c ≈ 80 GeV. If the electroweak theory is weakly coupled and the Higgs boson is found to be heavier than the critical value (which depends on the theory in question), cosmological remnants from the electroweak epoch are improbable.

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