179 citations · 1.8k across the 51 of their papers we have counts for
51 papers
Textures of dimension-six operators in the SMEFT with non-invertible selection rules
Tatsuo Kobayashi, Hajime Otsuka, Morimitsu Tanimoto +1
We investigate the flavor structures of dimension-six operators in the Standard Model Effective Field Theory (SMEFT) subject to non-invertible selection rules. In particular, we cl…
Determination of Majorana type-phases from the time evolution of lepton numbers
Nicholas J. Benoit, Yuta Kawamura, Saki Hamada +3
We have investigated an approach for determining the Majorana type-phases using the time evolution of lepton family numbers. We show how the second-order time derivative of the exp…
Effective theory for universal seesaw model and FCNC
Takuya Morozumi, Apriadi Salim Adam, Yuta Kawamura +3
We study the quark sector of the universal seesaw model with SU(2) SU(2) .The model incorporates the seesaw mechanism with the vector-like quarks (V…
Generalized Matter Parities from Finite Modular Symmetries
Tatsuo Kobayashi, Satsuki Nishimura, Hajime Otsuka +2
We classify a supersymmetric extension of the Standard Model by discrete symmetries originating from finite modular symmetries . Since all the couplings in supersymmetric theo…
Lepton flavor violation, lepton and electron EDM in the modular symmetry
Tatsuo Kobayashi, Hajime Otsuka, Morimitsu Tanimoto +1
We study the lepton flavor violation (LFV), the leptonic magnetic moments and the electric dipole moment (EDM) of the electron in the Standard-Model Effective Fiel…
Nonlinear magnon polaritons
Oscar Lee, Kei Yamamoto, Maki Umeda +6
We experimentally and theoretically demonstrate that nonlinear spin-wave interactions suppress the hybrid magnon-photon quasiparticle or "magnon polariton" in microwave spectra of…
New Physics Searches at Kaon and Hyperon Factories
Evgueni Goudzovski, Diego Redigolo, Kohsaku Tobioka +61
Rare meson decays are among the most sensitive probes of both heavy and light new physics. Among them, new physics searches using kaons benefit from their small total decay widths…
4D modular flavor symmetric models inspired by higher dimensional theory
Shota Kikuchi, Tatsuo Kobayashi, Hajime Otsuka +3
We study a scenario to derive four-dimensional modular flavor symmetric models from higher dimensional theory by assuming the compactification consistent with the modular symmetry.…
Modular symmetry in the SMEFT
Tatsuo Kobayashi, Hajime Otsuka, Morimitsu Tanimoto +1
We study the modular symmetric standard-model effective field theory. We employ the stringy Ansatz on coupling structure that 4-point couplings of matter fields are writt…
Electron EDM arising from modulus in the supersymmetric modular invariant flavor models
Morimitsu Tanimoto, Kei Yamamoto
The electric dipole moment (EDM) of electron is studied in the supersymmetric modular invariant theory of flavors with CP invariance. The CP symmetry of the lepton sector…
Flavour symmetries in the SMEFT
Darius A. Faroughy, Gino Isidori, Felix Wilsch +1
We analyse how and flavour symmetries act on the Standard Model Effective Field Theory, providing an organising principle to classify the large number of dimensio…
Acoustic ferromagnetic resonance and spin pumping induced by surface acoustic waves
Jorge Puebla, Mingran Xu, Bivas Rana +3
Voltage induced magnetization dynamics of magnetic thin films is a valuable tool to study anisotropic fields, exchange couplings, magnetization damping and spin pumping mechanism.…
Nonreciprocal surface acoustic wave propagation via magneto-rotation coupling
Mingran Xu, Kei Yamamoto, Jorge Puebla +7
One of the most fundamental forms of magnon-phonon interaction is an intrinsic property of magnetic materials, the "magnetoelastic coupling". This particular form of interaction ha…
With or without U(2)? Probing non-standard flavor and helicity structures in semileptonic B decays
Javier Fuentes-Martín, Gino Isidori, Julie Pagès +1
Motivated by the recent hints of lepton flavor universality violation observed in semileptonic decays, we analyze how to test flavor and helicity structures of the correspondin…
Topological characterization of classical waves: the topological origin of magnetostatic surface spin waves
Kei Yamamoto, Guo Chuan Thiang, Philipp Pirro +3
We propose a topological characterization of Hamiltonians describing classical waves. Applying it to the magnetostatic surface spin waves that are important in spintronics applicat…
Simultaneous explanation of and anomalies in vectorlike compositeness
Shinya Matsuzaki, Kenji Nishiwaki, Kei Yamamoto
We address the presently reported significant flavor anomalies in the and meson systems such as the CP violating Kaon decay () and lepton-flavor universality violatio…
Experimental Realization of a Passive GHz Frequency-Division Demultiplexer for Magnonic Logic Networks
Frank Heussner, Giacomo Talmelli, Moritz Geilen +9
The emerging field of magnonics employs spin waves and their quanta, magnons, to implement wave-based computing on the micro- and nanoscale. Multi-frequency magnon networks would a…
polarization vs. anomalies in the leptoquark models
Syuhei Iguro, Teppei Kitahara, Yuji Omura +2
Polarization measurements in are useful to check consistency in new physics explanations for the and anomalies. In this…
Spin transfer torques and spin-dependent transport in a metallic F/AF/N tunneling junction
Kei Yamamoto, Olena Gomonay, Jairo Sinova +1
We study spin-dependent electron transport through a ferromagnetic-antiferromagnetic-normal metal tunneling junction subject to a voltage or temperature bias, in the absence of spi…
Simultaneous interpretation of and anomalies in terms of chiral-flavorful vectors
Shinya Matsuzaki, Kenji Nishiwaki, Kei Yamamoto
We address the presently reported significant flavor anomalies in the Kaon and meson systems such as the CP violating Kaon decay () and lepton-flavor universality violati…
Spin colossal magnetoresistance in an antiferromagnetic insulator
Zhiyong Qiu, Dazhi Hou, Joseph Barker +3
Colossal magnetoresistance (CMR) refers to a large change in electrical conductivity induced by a magnetic field in the vicinity of a metal-insulator transition and has inspired ex…
Spin caloric effects in antiferromagnets assisted by an external spin current
Olena Gomonay, Kei Yamamoto, Jairo Sinova
Searching for novel spin caloric effects in antiferromagnets we study the properties of thermally activated magnons in the presence of an external spin current and temperature grad…
Gluino-mediated electroweak penguin with flavor-violating trilinear couplings
Motoi Endo, Toru Goto, Teppei Kitahara +3
In light of a discrepancy of the direct violation in decays, , we investigate gluino contributions to the electroweak penguin, where flavo…
Probing SUSY effects in
Veronika Chobanova, Giancarlo D'Ambrosio, Teppei Kitahara +4
We explore supersymmetric contributions to the decay , in light of current experimental data. The Standard Model (SM) predicts $\mathcal{B}(K_S^0\rightarrow…