Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-05-06
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 2 figures, To appear in the proceedings of 10th Hellenic School and Workshops on Elementary Particle Physics and Grav
Scientific paper
We report some recent progress towards classification of phenomenologically appealing heterotic string models in the Free Fermionic Formulation. We focus on a class of Z2xZ2 models with SO(10) space-time gauge symmetry and study their main phenomenological aspects. We further consider reducing the gauge symmetry to the Pati-Salam gauge group SU(4)XSU(2)_LxSU(2)_R and impose a series of phenomenological constraints including the existence of gauge symmetry breaking Higgs particles and the elimination of exotic fractionally charged states.
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