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23 papers · 1 filter
SN1987A constraints to BSM models with extra neutral bosons near the trapping regime: model as an illustrative example
Kwang-Chang Lai, Chun Sing Jason Leung, Guey-Lin Lin
New physics beyond the Standard Model (BSM) with an extra neutral boson can be constrained from the observation of SN1987A, since the production of this neutral boson in a supernov…
Hermitian Matrix Diagonalization and its Symmetry Properties
S. H. Chiu, T. K. Kuo
A hermitian matrix can be parametrized by a set consisting of its determinant and the eigenvalues of its submatrices. We established a group of equations which connect these variab…
Eigenvector-eigenvalue identities and an application to flavor physics
S. H. Chiu, T. K. Kuo
The eigenvector-eigenvalue identities are expanded to include general mixing parameters. Some simple relations are obtained and they reveal an intricate texture of connections betw…
Rephasing invariance and permutation symmetry in flavor physics
T. K. Kuo, S. H. Chiu
With some modifications, the arguments for rephasing invariance can be used to establish permutation symmetry for the standard model. The laws of evolution of physical variables, w…
Flavor Mixing and the Permutation Symmetry among Generations
T. K. Kuo, S. H. Chiu
In the standard model, the permutation symmetry among the three generations of fundamental fermions is usually regarded to be broken by the Higgs couplings. It is found that the sy…
Features of Neutrino Mixing
S. H. Chiu, T. K. Kuo
The elements (squared) of the neutrino mixing matrix are found to satisfy, as functions of the induced mass, a set of differential equations. They show clearly the dominance of pol…