Large Top and Bottom Yukawa Couplings in Minimal Supersymmetry

Abstract

We present analytic expressions for the top and bottom Yukawa couplings in the context of the minimal supersymmetric standard model when both couplings $h_{t,0},h_{b,0}$ are large at the unification scale. For sufficiently large $h_{t,0},h_{b,0}$, i.e. within $\sim (20-25)\%$ close to their fixed point values, using as input the central value of the bottom mass $m_b(m_b)=4.25GeV$, we find that the top mass lies in the range $m_t\approx (174-178)GeV$, while $tan\beta \approx (55-58)$. Implications on the evolution of the scalar masses and the radiative symmetry breaking scenario are discussed. %

(LateX, 9p, CERN-TH.7366/94, typos in eq.13 corrected, results unchanged)

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• Renormalization group evolution of R-parity-violating Yukawa couplings
• Curing O(a) Errors in 3-D Lattice SU(2) x U(1) Higgs Theory
• Possible dynamical determination of $m_t$, $m_b$ and $m_τ
• Infrared alignment of SUSY flavor structures
• Unification, KK-thresholds and the top Yukawa coupling in F-theory GUTs
• Low Energy Thresholds and the Scalar Mass Spectrum in Minimal Supersymmetry
• MSSM phenomenology in the large tanb regime
• Analytic Approach to the MSSM Mass Spectrum in the Large Tan$\beta$ Regime