Isao Umemura

TL;DR: Comparison of the nucleotide sequences of VH segments within each family showed that profiles of accumulation of mutations in framework (FR) and complementarity-determining (CDR) regions were different, and the possibility that conserved pseudogenes serve as a reservoir of Vh segments is discussed.

TL;DR: In this article, the phase transition associated with the electroweak and lepton number symmetry breaking in the singlet majoron model was investigated and it was shown that for a region of the model parameters the first order phase transition occurs, while the Higgs particle mass is larger than 50 GeV.

TL;DR: In this article, spontaneous R-parity breaking in a supersymmetric majoron model was investigated in the presence of the superfields of antineutrinos and an L = 2 singlet.

TL;DR: In this paper, the spontaneous lepton-number/R-parity violation in the supersymmetric singlet majoron model is investigated, by giving attention to the neutrino properties and the related issues.