Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-10-19
Eur.Phys.J.C28:353-363,2003
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages including 7 tables (Typos corrected as per the published version)
Scientific paper
10.1140/epjc/s2003-01180-x
In a class of SUSY SO(10) with $SU(2)_L x SU(2)_R x U(1)_{B-L} x SU(3)_C$ $(g_{2L}\neq g_{2R})$ intermediate gauge symmetry, we observe that the prediction on the unification mass $(M_U)$ is unaffected by Planck-scale-induced gravitational and intermediate-scale-threshold effects, although the intermediate scale $(M_I)$ itself is subject to such corrections. In particular, without invoking the presence of additional lighter scalar degrees of freedom but including plausible and reasonable threshold effects, we find that interesting solutions for neutrino physics corresponding to $M_I\simeq 10^{10}-10^{13}$ GeV and $M_U\simeq (5-6) x 10^{17}$ GeV are permitted in the minimal models. Possibilities of low-mass right-handed gauge bosons corresponding to $M_I\simeq 1-10$ TeV consistent with the CERN-LEP data are pointed out in a number of models when threshold effects are included using effective mass parameters.
Cajee B. D.
Das Ch. R.
Parida Mina K.
Purkayastha B.
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