Implications of LEP Results for SO(10) Grandunification with Two Intermediate Stages

Abstract

We consider the breaking of the grand unification group $SO(10)$ to the standard model gauge group through several chains containing two intermediate stages. Using the values of the gauge coupling constants at scale $M_Z$ derived from recent LEP data, we determine the range of their intermediate and unification scales. In particular, we identify those chains that permit new gauge structure at relatively low energy $(\sim 1\mathrm{TeV})$.

(LATEX, 9 pages + 3 pages of figures not included) OITS-488

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