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Electroweak symmetry breaking via QCD.

Jisuke Kubo1, Kher Sham Lim2, Manfred Lindner2

  • 1Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192, Japan.

Physical Review Letters
|September 13, 2014
PubMed
Summary

We introduce a novel mechanism for electroweak scale generation using Quantum Chromodynamics (QCD) and colored scalar fields. This dynamic approach, involving Higgs portal symmetry breaking, suggests new particle production at the Large Hadron Collider (LHC).

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Area of Science:

  • High Energy Physics
  • Particle Physics
  • Theoretical Physics

Background:

  • The Standard Model requires an explanation for electroweak symmetry breaking.
  • The hierarchy problem remains a significant challenge in particle physics.
  • Quantum Chromodynamics (QCD) provides a framework for strong interactions.

Purpose of the Study:

  • To propose a new, nonperturbative mechanism for generating the electroweak scale.
  • To explore the role of extended scalar degrees of freedom within QCD.
  • To investigate dynamical electroweak symmetry breaking via a Higgs portal.

Main Methods:

  • Extending QCD with conformally invariant scalar fields.
  • Utilizing dynamical symmetry breaking through scalar field condensation.
  • Applying renormalization group evolution to constrain particle masses.

Main Results:

  • A mechanism for generating the electroweak scale dynamically is proposed.
  • A colored scalar boson with mass 350 GeV≲mS≲3 TeV is predicted.
  • The colored boson is potentially discoverable at the Large Hadron Collider (LHC).

Conclusions:

  • This nonperturbative approach offers a new perspective on electroweak scale generation.
  • The predicted colored boson could be produced at the LHC, providing experimental tests.
  • The model offers potential solutions to the hierarchy problem.