2002/11/04 by Nobuhiro Maekawa, Maekawa, Nobuhiro
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0211034
10 pages, Talk presented at SUSY2002 held at DESY, Humburg(Germany), Jun. 17-23 2002
arxiv created 2002/11/04 · arxiv updated 2009/11/30
In this talk, we introduce a new scenario of grand unified theory (GUT) with anomalous U(1)A gauge symmetry. Since generic interactions (including non-renormalizable interactions) are introduced, once we fix the symmetry of the theory, we can define the theory without O(1) coefficients. The number of parameters to determine the symmetry is just 11 or 12 integer parameters which are anomalous U(1)A charges(integer) for introduced multiplets. It is surprising that the GUT scenario can explain doublet-triplet splitting, quark and lepton masses and mixing angles. In neutrino sector, the scenario realizes LMA solution for solar neutrino problem and large Ue3=O(0.1). Moreover, the scenario predicts that the unification scale becomes smaller than the usual GUT scale, namely proton decay via dimension 6 operators may be seen in future experiments. This talk is based on the papers\citemaekawa,maekawa2,maekawa3,BM,MY.