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The universality class of the electroweak theory

Nuclear Physics B, ISSN: 0550-3213, Vol: 532, Issue: 1, Page: 283-314
1998
  • 212
    Citations
  • 0
    Usage
  • 16
    Captures
  • 0
    Mentions
  • 0
    Social Media
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Metrics Details

  • Citations
    212
    • Citation Indexes
      212
  • Captures
    16

Article Description

We study the universality class and critical properties of the electroweak theory at finite temperature. Such critical behaviour is found near the endpoint m H = m H,c of the line of first-order electroweak phase transitions in a wide class of theories, including the Standard Model (SM) and a part of the parameter space of the Minimal Sypersymmetric Standard Model (MSSM). We find that the location of the endpoint corresponds to the Higgs mass m H,c = 72(2) GeV in the SM with sin 2 θ w = 0, and m H,c < 80 GeV with sin 2 θ w = 0.23. As experimentally m H > 88 GeV, there is no electroweak phase transition in the SM. We compute the corresponding critical indices and provide strong evidence that the phase transitions near the endpoint fall into the three-dimensional Ising universality class.

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