Is There a Hot Electroweak Phase Transition at mHmW?

K. Kajantie, M. Laine, K. Rummukainen, and M. Shaposhnikov
Phys. Rev. Lett. 77, 2887 – Published 30 September 1996
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Abstract

We provide nonperturbative evidence for the fact that there is no hot first or second order electroweak phase transition at large Higgs masses, mH=95, 120, and 180 GeV. This means that the line of first order phase transitions separating the symmetric and broken phases at small mH has an end point mH,c. In the minimal standard electroweak theory 70<mH,c<95GeV and most likely mH,c80GeV. 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.

  • Received 10 May 1996

DOI:https://doi.org/10.1103/PhysRevLett.77.2887

©1996 American Physical Society

Authors & Affiliations

K. Kajantie1,2, M. Laine3, K. Rummukainen4, and M. Shaposhnikov1

  • 1CERN/TH, CH-1211 Geneva 23, Switzerland
  • 2Department of Physics, University of Helsinki, P.O. Box 9, 00014 Helsinki, Finland
  • 3Institut für Theoretische Physik, Philosophenweg 16, D-69120 Heidelberg, Germany
  • 4Department of Physics, Indiana University, Swain Hall West 117, Bloomington, Indiana 47405

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Vol. 77, Iss. 14 — 30 September 1996

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