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Related Experiment Videos

Proposal for a supersymmetric standard model.

D E López-Fogliani1, C Muñoz

  • 1Departamento de Física Teórica C-XI, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain.

Physical Review Letters
|August 16, 2006
PubMed
Summary
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Neutrinos possess mass, prompting extensions to the minimal supersymmetric standard model (MSSM). This study proposes a solution to the MSSM

Area of Science:

  • Particle Physics
  • Supersymmetry
  • Cosmology

Background:

  • Neutrinos have mass, which is not explained by the Standard Model.
  • The minimal supersymmetric standard model (MSSM) requires extensions to accommodate neutrino masses.
  • The mu problem in the MSSM is a significant theoretical challenge.

Purpose of the Study:

  • To propose an extension of the MSSM that naturally incorporates neutrino masses.
  • To solve the MSSM mu problem without introducing extra singlet superfields.
  • To explore the implications of specific superpotential terms for neutrino physics.

Main Methods:

  • Introducing three gauge-singlet neutrino superfields with specific Yukawa couplings.
  • Utilizing terms like nuc H1H2 in the superpotential for spontaneous solution of the mu problem.

Related Experiment Videos

  • Employing terms like (nuc)3 to generate Majorana neutrino masses and avoid axions.

    • Main Results:

    • A mechanism to solve the MSSM mu problem using neutrino superfields is presented.
    • Effective Majorana neutrino masses are generated at the electroweak scale.
    • The model reproduces the correct scale of neutrino masses for Dirac masses around 10(-4) GeV.

    Conclusions:

    • The proposed extension offers a compelling solution to the mu problem and neutrino mass generation within a supersymmetric framework.
    • Explicit breaking of lepton number and R parity is a consequence of the model.
    • This approach provides a viable path for supersymmetric models to address observed neutrino properties.