Intermediate mass scales in the nonsupersymmetric SO(10) grand unification: A reappraisal

Stefano Bertolini, Luca Di Luzio, and Michal Malinský
Phys. Rev. D 80, 015013 – Published 17 July 2009

Abstract

The constraints of gauge unification on intermediate mass scales in nonsupersymmetric SO(10) scenarios are systematically discussed. With respect to the existing reference studies we include the U(1) gauge mixing renormalization at the one- and two-loop level, and reassess the two-loop beta coefficients. We evaluate the effects of additional Higgs multiplets required at intermediate stages by a realistic mass spectrum and update the discussion to the present day data. On the basis of the obtained results, SO(10) breaking patterns with up to two intermediate mass scales are discussed for potential relevance and model predictivity.

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  • Received 27 March 2009

DOI:https://doi.org/10.1103/PhysRevD.80.015013

©2009 American Physical Society

Authors & Affiliations

Stefano Bertolini* and Luca Di Luzio

  • INFN, Sezione di Trieste, and SISSA, Via Beirut 4, I-34014 Trieste, Italy

Michal Malinský

  • Theoretical Particle Physics Group, Department of Theoretical Physics, Royal Technical Institute (KTH), Roslagstullsbacken 21, SE-106 91 Stockholm, Sweden

  • *bertolin@sissa.it
  • diluzio@sissa.it
  • malinsky@kth.se

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Vol. 80, Iss. 1 — 1 July 2009

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