Hiroaki Sugiyama

Resolving theta(23) degeneracy by accelerator and reactor neutrino oscillation experiments

If the lepton mixing angle

Dark matter and a suppression mechanism for neutrino masses in the Higgs triplet model

{\ensuremath{\theta}}_{23}

Lepton Flavour Violating Decays tau ---> anti-l ll and mu ---> e gamma in the Higgs Triplet Model

is not maximal, there arises a problem of ambiguity in determining

Lepton number violation at the LHC with leptoquark and diquark

{\ensuremath{\theta}}_{23}

Loop Suppression of Dirac Neutrino Mass in the Neutrinophilic Two Higgs Doublet Model

due to the existence of two degenerate solutions, one in the first and the other in the second octant. We discuss an experimental strategy for resolving the

Neutrino masses from loop-induced Dirac Yukawa couplings

{\ensuremath{\theta}}_{23}

Constraints from LFV processes in the Higgs triplet model

octant degeneracy by combining reactor measurement of

Discrimination of models including doubly charged scalar bosons by using tau lepton decay distributions

{\ensuremath{\theta}}_{13}

Five-lepton and six-lepton signatures from production of neutral triplet scalars in the Higgs triplet model

with accelerator

Probing models of neutrino masses via the flavor structure of the mass matrix

{\ensuremath{\nu}}_{\ensuremath{\mu}}