| DATE: |
2004-05-25 11:00 - |
| PLACE: |
Kenkyu Honkan 2F RM 220 |
| TITLE: |
Flavor structure in supersymmetric models |
| SPEAKER: |
Dr. Mitsuru Kakizaki (ICRR, Univ. of Tokyo) |
| LANGUAGE: |
Japanese |
| ABSTRACT: |
Supersymmetric (SUSY) extensions of the standard model suffer from unacceptably large flavor changing neutral currents in case of generic generation mixing among scalar partners of the SM fermions (sfermions). One of the solutions to this SUSY flavor problem is to realize alignment of the sfermion with corresponding fermion mass matrices. Despite simplicity of the idea, no satisfactory model have been known. We construct a novel alignment mechanism based on the democratic mass matrix model, which is known to be successful in yielding bi-large neutrino mixing with small quark mixing angles retained. We also compare the model we proposed and the conventional minimal supergravity scenario where sfermions are degenerate in mass. We point out that the predictions of the particular alignment mechanism differs entirely from those of the minimal supergravity framework and that these two models can be distinguishable by current and planned experiments. |
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