Zobrazeno 1 - 10
of 912
pro vyhledávání: '"Shimizu, Yusuke"'
We study a relic density of the flavino dark matter in modified Altarelli and Feruglio $A_4$ model which is respecting the $SU(2)_L\times A_4\times Z_3\times U(1)_R$ symmetry. We calculate the Lagrangian from the superpotential in the model. In estim
Externí odkaz:
http://arxiv.org/abs/2405.14163
Autor:
Shimizu, Yusuke, Takeshita, Shonosuke
We propose an SU(5) GUT model extended with two additional pairs of $\mathbf{10}$ representation vector-like fermions. The CDF collaboration $W$ boson mass anomaly is explained by using the VEV of a real $\mathrm{SU(2)_L}$ triplet scalar coming from
Externí odkaz:
http://arxiv.org/abs/2303.11070
Autor:
Shimizu, Yusuke, Takeshita, Shonosuke
We propose an SU(5)$\times $U(1)$_\text{X}\times$U(1)$_\text{PQ}$ model without SUSY because the SUSY particles have not been observed yet. The $\mathrm{U(1)_{X}}$ gauge symmetry is the generalization of the $\mathrm{U(1)_{B-L}}$ gauge symmetry and $
Externí odkaz:
http://arxiv.org/abs/2212.13064
Autor:
Benoit, Nicholas J., Kawamura, Yuta, Kawano, Saki, Morozumi, Takuya, Shimizu, Yusuke, Yamamoto, Kei
We have investigated an approach to determine the Majorana type-phases using the time evolution of lepton family numbers. The Majorana type-phases are related to the orientation of unitarity triangles for the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) ma
Externí odkaz:
http://arxiv.org/abs/2212.00142
Autor:
Morozumi, Takuya, Adam, Apriadi Salim, Kawamura, Yuta, Panuluh, Albertus Hariwangsa, Shimizu, Yusuke, Yamamoto, Kei
We study the quark sector of the universal seesaw model with SU(2)$_L$ $\times$ SU(2)$_R$ $\times$ $U(1)$.The model incorporates the seesaw mechanism with the vector-like quarks (VLQs). The purpose of this work is to study the model with the effectiv
Externí odkaz:
http://arxiv.org/abs/2211.02360
The Type-I seesaw model is a common extension to the Standard Model that describes neutrino masses. The Type-I seesaw introduces heavy right-handed neutrinos with Majorana mass that transform as Standard Model electroweak gauge singlets. We initially
Externí odkaz:
http://arxiv.org/abs/2210.00165
Publikováno v:
Prog Theor Exp Phys (2023)
We propose a simple non-supersymmetric lepton flavor model with $A_4$ symmetry. The $A_4$ group is a minimal one which includes triplet irreducible representation. We introduce three Higgs doublets which are assigned as triplet of the $A_4$ symmetry.
Externí odkaz:
http://arxiv.org/abs/2209.10201
Autor:
Hirayama, Takahiro, Shimizu, Yusuke, Kinjo, Hidetoshi, Agena, Shinya, Hirakawa, Hitoshi, Maeda, Hiroyuki, Suzuki, Mikio, Kuba, Ryogo, Ishihara, Shohei, Matsuura, Naoki
Publikováno v:
In JPRAS Open September 2024 41:52-60
Autor:
Adam, Apriadi Salim, Benoit, Nicholas J., Kawamura, Yuta, Matsuo, Yamato, Morozumi, Takuya, Shimizu, Yusuke, Toyota, Naoya
We present a formulation of lepton family numbers, based on quantum field theory, for neutrino oscillation phenomenology that can be applied to nonrelativistic and relativistic energies for neutrinos. It is formulated for both types of neutrinos, Dir
Externí odkaz:
http://arxiv.org/abs/2106.02783
We propose an $A_4$ modular invariant flavor model of leptons, in which both CP and modular symmetries are broken spontaneously by the vacuum expectation value of the modulus $\tau$. The value of the modulus $\tau$ is restricted by the observed lepto
Externí odkaz:
http://arxiv.org/abs/2105.14292