Fermion masses and mixings in supersymmetric SO(10) with third-generation quasi-Yukawa unification

2025/06/13 by Shaikh Saad, Qaisar Shafi, Saad, Shaikh +1 · 1 citation
Physics and Astronomy · Computer Science · #Particle physics theoretical and experimental studies #Neutrino Physics Research #Computational Physics and Python Applications

paper · pdf · doi:10.48550/arxiv.2506.11806

Abstract

We discuss the charged and neutral fermion masses and mixings in a supersymmetric SO(10) model with a minimal Higgs sector consisting of the multiplets 10_H, 45_H, and 16_H + 16_H. In addition to the renormalizable Yukawa couplings involving the Higgs 10-plet, we include non-renormalizable Yukawa couplings, which are important for reproducing with good accuracy the observed masses and mixings in the quark and lepton sectors. We identify a preferred solution which is compatible with third family quasi-Yukawa unification, namely y_t ≈ y_b ≈ 0.73 y_τ at the unification scale, with the MSSM parameter tanβ∼ 58. Acceptable solutions with lower tanβ values are also realized in our framework, and we provide an example with tan β=10. Based on our fits, the masses for the three right-handed neutrinos turn out to be (M₁,M₂,M₃)∼ (10⁹, 8⋅ 10¹², 9⋅ 10¹²) GeV. We briefly discuss the metastable and quasistable string scenarios that can be realized in this class of supersymmetric SO(10) models.

Citations

• Electroweak Triplet Scalar Contribution to SO(10) Leptogenesis
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• Complex Spinors and Unified Theories
• Black holes and large N species solution to the hierarchy problem

Cited by

• Neutrino masses, δ_PMNS, and m_ββ in SO(10)

Related

• Fermion masses and mixings in SO(10) GUTs
• A realistic pattern of fermion masses from a five-dimensional SO(10) model
• Fermion Masses in SO(10)
• Explicit SO(10) Supersymmetric Grand Unified Model
• Lepton Masses and Mixings in Next-to-minimal Supersymmetric SO(10) GUT