2013/07/18 by Muhammad Adeel Ajaib, M. Adeel Ajaib, Ilia Gogoladze +1 · 13 citations
Physics and Astronomy · #CMB cold spot #Cosmic microwave background #Dark Matter and Cosmic Phenomena #Dark matter #Gauge (firearms) #Gluino #Grand Unified Theory #Higgs boson #Higgs sector #Minimal Supersymmetric Standard Model #Multiplet #Neutralino #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Spectral line #Standard Model (mathematical formulation) #Superpartner #Supersymmetry #Yukawa potential #hep-ph
paper · pdf · doi:10.1103/physrevd.88.095019
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 88(9) (American Physical Society) · 14 pages, 3 figures, 1 table. arXiv admin note: text overlap with arXiv:1303.6964
arxiv created 2013/07/18 · openalex publication_date 2013/11/22 · arxiv updated 2013/11/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the low energy implications, especially the particle spectroscopy, of SO(10) grand unification in which the SO(10) symmetry is broken to the Standard Model gauge group with a single pair of (144+144)-dimensional Higgs multiplet (unified Higgs sector). In this class of models, the asymptotic relation Yb\ensuremath≈Y_\ensuremathτ\ensuremath≈Yt/6 among the third generation quark and lepton Yukawa couplings can be derived. This relation leads to the prediction tan\ensuremathβ\ensuremath≈14, where tan\ensuremathβ is the well known Minimal Supersymmetric Standard Model parameter. We find that this type of Yukawa coupling unification (YU) is realized only by employing nonuniversal soft supersymmetry breaking terms, dictated by SO(10) symmetry, for the gauginos. A 125 GeV Higgs boson mass is also found to be consistent with YU at the \ensuremath∼5% level. Without imposing a constraint on the relic abundance of dark matter in these models, the squark and slepton masses, with the exception of the top squark, exceed 2 TeV and the gluino is heavier than 1 TeV. We show that the neutralino in this model is an acceptable dark matter candidate through the neutralino--top squark coannihilation scenario, with the top squark being relatively light (\ensuremath\gtrsim500 GeV).