Abstract
We show that one of the ways of obtaining consistency between the idea of supersymmetric grand unification and an apparent low value of α strong (M Z) ⋍ .11 indicated by several low energy experiments is to have an intermediate scale corresponding to a local B - L symmetry breaking around the mass scale of 10 10 to 10 12 GeV. We discuss the realization of this idea within the framework of supersymmetric SO(10) grand unified theories with spectra of particles derivable from simple superstring-inspired versions of this model. We then study the b - τ mass unification within this class of models and show that due to the influence of new gauge and Yukawa interactions beyond the intermediate scale, the prediction of the b-quark mass comes out well within the presently accepted values. We also discuss an unorthodox class of SUSY models, inspired by some theoretical considerations, having two pairs of Higgs doublets at low energy and show that they also can lead to unification with intermediate scales and low α s ( M Z ) as desired.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
