Dynamical Mechanism for Quark Mixing and Neutrino Oscillations

摘要

The authors show that assuming fermion generations to be given by a gauge211u001esymmetry plus a certain Higgs mechanism for its breaking, the known empirical 211u001efeatures of quark and lepton mixing can be largely explained, including in 211u001eparticular the fact that the mixing (CKM) matrix element U(micro)3 responsible 211u001efor the muon anomaly in atmospheric neutrinos is near maximal and much larger 211u001ethan their quark counterparts V(cb) and V(ts), while the corner elements for both 211u001equarks (V(ub), V(td)) and leptons (U(micro)3) are all very small. the mechanism 211u001ealso gives automatically a hierarchical fermion mass spectrum which is intimately 211u001erelated to the mixing pattern.