SO(10) grand unification in light of recent LHC searches and colored scalars at the TeV-scale

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INTERNATIONAL JOURNAL OF MODERN PHYSICS A, vol.31, no.8, 2016 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 8
  • Publication Date: 2016
  • Doi Number: 10.1142/s0217751x16500342
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: LHC, SO(10) grand unification, Pati-Salam, diboson excess, left-right model, colored scalars, renormalization group analysis, LEFT-RIGHT-SYMMETRY, COUPLING UNIFICATION, HIGGS-BOSON, MASS, BREAKING
  • Middle East Technical University Affiliated: No


e analyze the compatibility of the recent LHC signals and the TeV-scale left right model(s) in the minimal nonsupersymmetric SO(10) framework. We show that the models in which the Higgs content is selected based on the extended survival hypothesis do not allow the W-R boson to be at the TeV-scale. By relaxing this conjecture, we investigate various scenarios where a number of colored-scalars, originated from various Pati-Salam multiplets, are light and whence they survive down to the low energies. Performing a detailed renormalization group analysis with various low-energy Higgs configurations and symmetry breaking chains, while keeping the high energy Higgs content unmodified; we find that, among a number of possibilities, the models which have a light color-triplet scalar, and its combination with a light color-sextet, particularly stand out. Although these models do allow a TeV-scale W-R boson, generating the required value of the gauge coupling g(R) at this scale is nontrivial.