Bottom-tau Yukawa unification in the next-to-minimal supersymmetric standard model

1994/03/02 by B. C. Allanach, B.C. Allanach, S. F. King +1 · 2 citations
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(94)91491-5

published as Phys.Lett. B328 (1994) 360-368 · Southampton preprint SHEP 93/94-15, This is a latex file with postscript figures attached to the end of the document

arxiv created 1994/03/02 · openalex publication_date 1994/06/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We discuss the unification of the bottom quark and tau lepton Yukawa couplings within the framework of the next-to-minimal supersymmetric standard model. We compare the allowed regions of the m_t-tan β plane to those in the minimal supersymmetric standard model, and find that over much of the parameter space the deviation between the predictions of two models is small, and nearly always much less than the effect of current theoretical and experimental uncertainties in the bottom quark mass and the strong coupling constant. However over some regions of parameter space top-bottom Yukawa unification cannot be achieved. We also discuss the scaling of the light fermion masses and mixing angles, and show that to within current uncertainties the results of recent texture analyses performed for the minimal model also apply to the next-to-minimal model.

Citations

• A new lepton-quark mass relation in a unified theory
• Supersymmetric grand unified theories: Two-loop evolution of gauge and Yukawa couplings

Cited by

• Particle spectrum in the non-minimal supersymmetric standard model with tan β ≏
• Infrared fixed points and fixed lines in the top-bottom-tau sector in supersymmetric grand unification