Bottom-Tau Unification in Supersymmetric Model with Anomaly-Mediation

Abstract

We study the Yukawa unification, in particular, the unification of the Yukawa coupling constants of $b$ and $\tau$, in the framework of supersymmetric (SUSY) model. We concentrate on the model in which the SUSY breaking scalar masses are of the order of the gravitino mass while the gaugino masses originate from the effect of anomaly mediation and hence are one-loop suppressed relative to the gravitino mass. We perform an accurate calculation of the Yukawa coupling constants of $b$ and $\tau$ at the grand unified theory (GUT) scale, including relevant renormalization group effects and threshold corrections. In particular, we study the renormalization group effects, taking into account the mass splittings among sfermions, gauginos, and the standard model particles. We found that the Yukawa coupling constant of $b$ at the GUT scale is about $70\%$ of that of $\tau$ if there is no hierarchy between the sfermion masses and the gravitino mass. Our results suggest sizable threshold corrections to the Yukawa coupling constants at the GUT scale or significant suppressions of the sfermion masses relative to the gravitino mass.

17 pages, 5 figures

References in corpus (19)

• Non-perturbative Effect on Thermal Relic Abundance of Dark Matter
• Possible Signals of Wino LSP at the Large Hadron Collider
• Simply Unnatural Supersymmetry
• Higgs Mass and Unnatural Supersymmetry
• Unification and Fermion Mass Structure
• Search for disappearing tracks in proton-proton collisions at sqrt(s) = 8 TeV
• New GUT predictions for quark and lepton mass ratios confronted with phenomenology
• Quark and lepton masses at the GUT scale including SUSY threshold corrections
• Wino Dark Matter and Future dSph Observations
• Revisiting Big-Bang Nucleosynthesis Constraints on Dark-Matter Annihilation
• Search for supersymmetry in the multijet and missing transverse momentum final state in pp collisions at 13 TeV
• Wino Dark Matter in light of the AMS-02 2015 Data
• Yukawa Unification Predictions for the LHC
• Yukawa unification in SUSY SO(10) in light of the LHC Higgs data
• Implications for dark matter annihilation from the AMS-02 $\bar{p}/p$ ratio
• Yukawa coupling unification in SO(10) with positive μ and a heavier gluino
• Yukawa Unification and Sparticle Spectroscopy in Gauge Mediation Models
• Supersymmetric SO(10) Grand Unification at the LHC and Beyond
• AMS-02 Antiprotons from Annihilating or Decaying Dark Matter

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• Bottom-Tau Unification in Supersymmetric SU(5) Models with Extra Matters