30 citations · 141 across the 15 of their papers we have counts for
15 papers
Proton Decay and Axion Dark Matter in SO(10) Grand Unification via Minimal Left-Right Symmetry
Yuta Hamada, Masahiro Ibe, Yu Muramatsu +2
We study the proton lifetime in the Grand Unified Theory (GUT), which has the left-right (LR) symmetric gauge theory below the GUT scale. In particular, we focus on the mi…
SUSY threshold corrections to quark and lepton mixing inspired by GUT models
Yu Muramatsu, Yoshihiro Shigekami
In the standard model (SM), the Cabibbo-Kobayashi-Maskawa (CKM) matrix is the only origin of flavor violations (FVs). On the other hand, in general, there are a lot of sources of t…
flavor symmetric model in SUSY SU(5) GUT
Yu Muramatsu, Hideaki Okane, Yusuke Shimizu +1
We propose a model with flavor symmetry for leptons and quarks in the framework of supersymmetric SU(5) grand unified theory (GUT). The running masses of quarks and charged l…
R-parity violating solutions to the anomaly and their GUT-scale unifications
Quan-Yi Hu, Xin-Qiang Li, Yu Muramatsu +1
Recently, several -physics experiments report interesting anomalies in the semi-leptonic decays of -mesons, such as the excess in the measurements. These ano…
Flavor physics in the multi-Higgs doublet models induced by the left-right symmetry
Syuhei Iguro, Yu Muramatsu, Yuji Omura +1
In this paper, we discuss the multi-Higgs doublet models, that could be effectively induced by the extended Standard Model (SM). In particular, we focus on the phenomenology in the…
Light flavon signals at electron - photon colliders
Yu Muramatsu, Takaaki Nomura, Yusuke Shimizu +1
Flavor symmetries are useful to realize fermion flavor structures in the standard model. In particular, discrete symmetry is used to realize lepton flavor structures, and som…
Constraints of chromoelectric dipole moments to natural SUSY type sfermion spectrum
Nobuhiro Maekawa, Yu Muramatsu, Yoshihiro Shigekami
We investigate the lower bounds of sfermion masses from the constraints of chromoelectric dipole moments (CEDMs) in the natural SUSY-type sfermion mass spectrum, in which stop mass…
Flavor physics induced by light from SO(10) GUT
Junji Hisano, Yu Muramatsu, Yuji Omura +1
In this paper, we investigate predictions of the SO(10) Grand Unified Theory (GUT), where an extra U(1) gauge symmetry remains up to the supersymmetry (SUSY) breaking scal…
Flavor changing nucleon decay
Nobuhiro Maekawa, Yu Muramatsu
Recent discovery of neutrino large mixings implies the large mixings in the diagonalizing matrices of fields in grand unified theory (GUT), while the diagonaliz…
Mass Limit for Light Flavon with Residual Symmetry
Yu Muramatsu, Takaaki Nomura, Yusuke Shimizu
We present a modified Altarelli and Feruglio model where an additional singlet-prime flavon is introduced. In this model, non-zero is given by this additional…
Flavor violating from SUSY GUT in High-Scale SUSY
Junji Hisano, Yu Muramatsu, Yuji Omura +1
We propose an supersymmetric grand unified theory (SUSY GUT), where the gauge symmetry breaks down to at the…
Sizable D-term contribution as a signature of SUSY GUT model
Nobuhiro Maekawa, Yu Muramatsu, Yoshihiro Shigekami
We show that the sizable -term contributions to sfermion mass spectrum can be signatures of certain GUT, GUT. Note that these -term contribut…
Nucleon decay via dimension-6 operators in SUSY GUT model
Nobuhiro Maekawa, Yu Muramatsu
In the previous paper, we have shown that and $R_2\equiv\frac{Γ_{p \rightarrow K^0 + μ^c}}{Γ_{p \rightarr…
Nucleon decay via dimension 6 operators in anomalous U(1)_A SUSY GUT
Nobuhiro Maekawa, Yu Muramatsu
Nucleon lifetimes for various decay modes via dimension 6 operators are calculated in the anomalous GUT scenario, in which the unification scale becomes smaller than…
Two-loop Renormalization Factors of Dimension-six Proton Decay Operators in the Supersymmetric Standard Models
Junji Hisano, Daiki Kobayashi, Yu Muramatsu +1
The renormalization factors of the dimension-six effective operators for proton decay are evaluated at two-loop level in the supersymmetric grand unified theories. For this purpose…