| DATE: |
2006-01-18 - 2006-01-19 |
| PLACE: |
Hon-kan Rm. 220 |
| TITLE: |
Lepton flavor violation as a probe of quark-lepton unification |
| CONTACT: |
Tango |
| SPEAKER: |
Prof. Kingman Cheung (National Tsing Hua University) |
| LANGUAGE: |
English |
| ABSTRACT: |
The recent measurements of the solar neutrino mixing angle
$\theta_{sol}$ and the Cabibbo mixing angle $\theta_C$ reveal
a surprising relation, $ \theta_{sol}+\theta_C\simeq\frac{\pi}{4} $.
Interpreting this empirical relation as a support of the quark-lepton
unification, we find that the PMNS mixing matrix can be decomposed into
a CKM-like matrix and maximal mixing matrices, which can give profound
implications on the quark-lepton unification. We explore a possibility
to probe the implication of quark-lepton unification by considering the
relative sizes of branching ratios for the lepton flavor violating
radiative decay processes, $l_i\rightarrow l_j\gamma$, in the context of
the supersymmetric standard model with heavy right-handed Majorana
neutrinos.
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