Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-02-16
Phys.Lett. B454 (1999) 53-58
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 2 figure included in the ps file, uses psfig.sty
Scientific paper
10.1016/S0370-2693(99)00384-6
Motivated by the fact that the string scale can be many orders of magnitude lower than the Planck mass, we investigate the required modifications in the MSSM $\beta$--functions in order to achieve intermediate ($10^{10-13}$GeV) scale unification, keeping the traditional logarithmic running of the gauge couplings. We present examples of string unified models with the required extra matter for such a unification while we also check whether other MSSM properties (such as radiative symmetry breaking) are still applicable.
Leontaris George K.
Tracas N. D.
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