177 citations · 2.3k across the 107 of their papers we have counts for
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CP Violation in Neutrinoless Double Beta Decay and Neutrino Oscillation
T. Fukuyama, K. Matsuda, H. Nishiura
Taking account of possible CP violation, we discuss about the constraints on the lepton mixing angles from the neutrinoless double beta decay and from the neutrino oscillation for…
CP Violation in Neutrinoless Double Beta Decay
T. Fukuyama, K. Matsuda, H. Nishiura
We argue three-flavour neutrino mixing. We consider the neutrinos as Majorana particles and see how the neutrinoless double beta decay constrains the neutrino mixing angles. Our fo…
General Theorem about Gravitational Lensing
Takeshi Fukuyama, Takashi Okamura
We study the general theorem about gravitational lensing which states the relationship between the numbers of images with different parities. Our formulation allows an extension to…
Mass Matrix of Majorana Neutrinos
T. Fukuyama, H. Nishiura
We present a massive Majorana neutrino model and see how it is constrained from the solar and atmospheric neutrino deficit experiments. This model incorporates the seesaw mechanism…
Multipole Expansion Model in Gravitational Lensing
T. Fukuyama, Y. Kakigi, T. Okamura
Non-transparent models of multipole expansion model and two point-mass model are analyzed from the catastrophe theory. Singularity behaviours of -pole moments are discussed. W…