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Related Experiment Videos

Top compositeness and precision unification.

Kaustubh Agashe1, Roberto Contino, Raman Sundrum

  • 1Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218-2686, USA.

Physical Review Letters
|December 31, 2005
PubMed
Summary
This summary is machine-generated.

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This study explores gauge coupling evolution in a nonsupersymmetric model. Precision coupling unification occurs near 10^15 GeV, similar to supersymmetric theories, by resolving the hierarchy problem with Higgs compositeness.

Area of Science:

  • Particle Physics
  • High Energy Physics
  • Theoretical Physics

Background:

  • The Standard Model (SM) describes fundamental particles and forces but has limitations, including the hierarchy problem.
  • Higgs compositeness offers a potential solution to the hierarchy problem, suggesting the Higgs boson is not fundamental.
  • Nonsupersymmetric scenarios provide alternative frameworks for exploring physics beyond the Standard Model.

Purpose of the Study:

  • To investigate the evolution of Standard Model gauge couplings in a nonsupersymmetric scenario.
  • To explore how Higgs compositeness resolves the hierarchy problem.
  • To examine the implications of top quark mass and bottom quark precision tests for compositeness.

Main Methods:

  • Analysis of the evolution of Standard Model gauge couplings.

Related Experiment Videos

  • Incorporation of Higgs compositeness as a solution to the hierarchy problem.
  • Consideration of top quark mass and precision bottom quark measurements.

    • Main Results:

    • The right-handed top quark is inferred to be composite based on top quark mass and bottom quark precision data.
    • Precision coupling unification is achieved at approximately 10^15 GeV.
    • This unification occurs within a nonsupersymmetric framework with Higgs compositeness.

    Conclusions:

    • Higgs compositeness provides a viable mechanism for resolving the hierarchy problem.
    • The proposed model achieves precision coupling unification comparable to supersymmetric theories.
    • This research offers insights into physics beyond the Standard Model and potential new symmetries.