3 papers
hep-ph2023
Vacuum stability and Q-ball formation in the Type II Seesaw model
Naoyuki Haba, Yasuhiro Shimizu, Toshifumi Yamada
We investigate vacuum stability and Q-ball formation in the Type II seesaw model by considering the effective potential for scalar fields, taking into account renormalization effec…
hep-ph2023
Neutrino Mass in Non-Supersymmetric GUT
Naoyuki Haba, Yasuhiro Shimizu, Toshifumi Yamada
We study a prediction on neutrino observables in a non-supersymmetric renormalizable GUT model that contains a complex scalar field and a scalar fie…
hep-ph2022
Neutrino mass square ratio and neutrinoless double beta decay in random neutrino mass matrices
Naoyuki Haba, Yasuhiro Shimizu, Toshifumi Yamada
We study the neutrino mass anarchy in the Dirac neutrino, seesaw, double seesaw models. Assuming the anarchy hypothesis, the mass matrices are random and distributed in accordance…