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Related Experiment Videos

Limits on a composite Higgs boson.

R S Chivukula1, C Hölbling, N Evans

  • 1Department of Physics, Boston University, Boston, Massachusetts 02215, USA. sekhar@bu.edu

Physical Review Letters
|September 16, 2000
PubMed
Summary
This summary is machine-generated.

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Precision electroweak data usually limit the Higgs boson mass. However, new analysis considering higher energy scale corrections suggests Higgs masses up to 500 GeV are possible.

Area of Science:

  • Particle Physics
  • Cosmology
  • Quantum Field Theory

Background:

  • Standard Model Higgs boson mass is constrained by precision electroweak data to below ~190 GeV.
  • The Standard Model is an effective field theory, implying underlying nontrivial physics at higher energy scales.

Purpose of the Study:

  • To re-evaluate Higgs boson mass constraints by incorporating higher-scale physics effects.
  • To determine the allowed Higgs mass range considering corrections to the T parameter.

Main Methods:

  • Fitting precision electroweak data to determine allowed regions in the (m(H), delta T) plane.
  • Estimating corrections to the T parameter arising from higher energy scale dynamics.

Main Results:

Related Experiment Videos

  • The allowed range for the Higgs boson mass is significantly enlarged beyond the conventional limit.
  • Higgs boson masses up to 500 GeV are found to be consistent with precision electroweak data when higher-scale corrections are considered.

    • Conclusions:

    • The triviality of the Standard Model necessitates considering higher energy scale physics.
    • Precision electroweak data, when interpreted within an effective field theory framework, allow for a much larger Higgs boson mass than previously thought.