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Lepton Flavor Violation as a Probe of Quark-Lepton Unification

Kingman Cheung·Sin Kyu Kang·C. S. Kim·Jake Lee
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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 ~ 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-->l_j gamma, in the context of the supersymmetric standard model with heavy right-handed Majorana neutrinos.

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Kingman Cheung, Sin Kyu Kang, C. S. Kim, Jake Lee. 2005-03-14. Lepton Flavor Violation as a Probe of Quark-Lepton Unification. https://doi.org/10.1103/physrevd.72.036003

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