Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-07-03
JHEP 0210 (2002) 014
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages, LaTeX, small modifications, one reference added
Scientific paper
10.1088/1126-6708/2002/10/014
We study a $D$-term inflation scenario in a model extended from the minimal supersymmetric standard model (MSSM) by two additional abelian factor groups focussing on its particle physics aspects. Condensates of the fields related to the inflation can naturally give a possible solution to both the $\mu$-problem in the MSSM and the neutrino mass through their nonrenormalizable couplings to the MSSM fields. Mixings between neutrinos and neutralinos are also induced by some of these condensates. Small neutrino masses are generated by a weak scale seesaw mechanism as a result of these mixings. Moreover, the decay of the condensates may be able to cause the leptogenesis. Usually known discrepancy between both values of a Fayet-Iliopoulos $D$-term which are predicted by the COBE normalization and also by an anomalous U(1) in the weakly-coupled superstring might be reconciled.
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