Lepton flavor violation as a probe of quark-lepton unification

2005/03/14 by Kingman Cheung, Sin Kyu Kang, C. S. Kim +1 · 3 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.72.036003

published as Phys.Rev. D72 (2005) 036003 · 10 pages, no figures

arxiv created 2005/03/14 · openalex publication_date 2005/08/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The recent measurements of the solar neutrino mixing angle \ensuremathθ_sol and the Cabibbo mixing angle \ensuremathθ_C reveal a surprising relation, \ensuremathθ_sol+\ensuremathθ_C\ensuremath≃\frac\ensuremathπ4, which has been interpreted as an evidence for quark-lepton unification. We show in realizations of quark-lepton unification that the PMNS mixing matrix can be decomposed into a CKM-like matrix and maximal mixing matrices. We explore a possibility to probe such implications by considering the relative sizes of branching ratios for the lepton flavor violating radiative decay processes, l_i\ensuremath→l_j\ensuremathγ, in the context of the supersymmetric standard model with heavy right-handed Majorana neutrinos.

Citations

• Deviation of neutrino mixing from bimaximal mixing
• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• A new lepton-quark mass relation in a unified theory
• Measurement of the Total Active 8B Solar Neutrino Flux at the Sudbury Neutrino Observatory with Enhanced Neutral Current Sensitivity
• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• A parametrization for the neutrino mixing matrix
• Search for Lepton Flavor Violation in the Decayτ±→μ±γ
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• NEUTRINO CP VIOLATING PARAMETERS FROM NONTRIVIAL QUARK–LEPTON CORRELATION: A S3 × GUT MODEL
• Seesaw mechanism in quark-lepton complementarity
• Correlation between lepton flavor violation and B(d,s)–B¯(d,s) mixing in SUSY GUT