Discriminating MSSM families in (free-field) Gepner Orientifolds

Details Discriminating MSSM families in (free-field) Gepner Orientifolds Discriminating MSSM families in (free-field) Gepner Orientifolds

2008-08-30

arxiv.org/abs/0809.0083v2

JHEP0810:106,2008

Physics

High Energy Physics

High Energy Physics - Theory

31 pages; misprints corrected, references added

Scientific paper

10.1088/1126-6708/2008/10/106

A complete analysis of orientifold compactifications involving Gepner models that are free fields (k=1,2) is performed. A set of tadpole solutions is found that are variants of a single chiral spectrum. The vacua found have the property that different families have different U(1) charges so that one family cannot obtain masses in perturbation theory. Its masses must come from instantons, allowing for a hierarchy of masses. The phenomenological aspects of such vacua are analyzed.

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