5 papers
GUT-motivated non-invertible symmetry as a solution to the strong CP problem and the neutrino CP-violating phase
Tatsuo Kobayashi, Hajime Otsuka, Morimitsu Tanimoto +1
The unsuppressed CP violation in QCD is a problem in the standard model. If we have some mechanism to guarantee real determinants of the quark mass matrices, the vanishing physical…
Lepton mass textures from non-invertible multiplication rules
Tatsuo Kobayashi, Hajime Otsuka, Morimitsu Tanimoto +1
We study the lepton mass textures, which are derived by gauging of symmetries. We can obtain various textures for the Yukawa couplings in the charged…
Axionless Solution to the Strong CP Problem -- two-zeros textures of the quark and lepton mass matrices and neutrino CP violation --
Morimitsu Tanimoto, Tsutomu T. Yanagida
CP invariance is a very attractive solution to the strong CP problem in QCD. This solution requires the vanishing , where the an…
More about quark Yukawa textures from selection rules without group actions
Tatsuo Kobayashi, Yume Nishioka, Hajime Otsuka +1
We study the coupling selection rules associated with non-group symmetries, i.e., gauging of symmetries. We clarify which Yukawa textures can be deriv…
Prediction of the CP Phase in the Neutrino Oscillation and an Axion-less Solution to the Strong CP Problem
Morimitsu Tanimoto, Tsutomu T. Yanagida
A model of the axion-less solution to the strong CP problem has been recently constructed based on the orbifold in the six dimensional space-time. We extend,…