56 citations · 166 across the 26 of their papers we have counts for
27 papers
Heavy Neutral Lepton at Same-Sign Muon Collider
Ryuichiro Kitano, Ian Low, Ryutaro Matsudo +2
We explore the discovery potential of heavy neutral leptons (HNLs), motivated by models addressing the origin of neutrino masses, at the proposed high-energy same-sign muon collide…
On cusps in the potential
Ryuichiro Kitano, Ryutaro Matsudo, Lukas Treuer
The large analysis of QCD states that the potential for the meson develops cusps at , , , with the number of flavors. Furthermore, the…
Higgs boson production at colliders
Yu Hamada, Ryuichiro Kitano, Ryutaro Matsudo +4
We study Higgs boson production at colliders at high energy. Since both initial-state particles are positively charged, there is no boson fusion at the leading order,…
Boundary condition and reflection anomaly in dimensions
Jiunn-Wei Chen, Chang-Tse Hsieh, Ryutaro Matsudo
It is known that the d single Majorana fermion theory has an anomaly of the reflection, which is canceled out when 16 copies of the theory are combined. Therefore, it is expec…
Precision and elastic scatterings
Yu Hamada, Ryuichiro Kitano, Ryutaro Matsudo +1
Expected precisions of measurements of the elastic scattering cross sections are estimated for and colliders, which are recently proposed as future realistic po…
Understanding anomalous particle production in massless QED via time-varying angle
Yu Hamada, Ryuichiro Kitano, Ryutaro Matsudo +1
The Maxwell equations imply that, under the background of non-zero , varying term produces . An interesting example is the…
TRISTAN
Yu Hamada, Ryuichiro Kitano, Ryutaro Matsudo +2
The ultra-cold muon technology developed for the muon experiment at J-PARC provides a low emittance beam which can be accelerated and used for realistic collider experi…
Missing final state puzzle in the monopole-fermion scattering
Ryuichiro Kitano, Ryutaro Matsudo
It has been known that when a charged fermion scatters off a monopole, the fermion in the -wave component must flip its chirality, i.e., fermion number violation must happen. Th…
Peeking into the vacuum
Ryuichiro Kitano, Ryutaro Matsudo, Norikazu Yamada +1
We propose a subvolume method to study the dependence of the free energy density of the four-dimensional SU() Yang-Mills theory on the lattice. As an attempt, the method is…
Vector mesons on the wall
Ryuichiro Kitano, Ryutaro Matsudo
A domain-wall configuration of the meson bounded by a string (called a pancake or a Hall droplet) is recently proposed to describe the baryons with spin . In order to u…
Complex poles, spectral function and reflection positivity violation of Yang-Mills theory
Kei-Ichi Kondo, Yui Hayashi, Ryutaro Matsudo +2
We discuss the analytic continuation of the gluon propagator from the Euclidean region to the complex squared-momentum plane towards the Minkowski region from a viewpoint of gluon…
Quark confinement in the Yang-Mills theory with a gauge-invariant gluon mass in view of the gauge-invariant BEH mechanism
Akihiro Shibata, Kei-Ichi Kondo, Ryutaro Matsudo +1
In order to clarify the mechanism of quark confinement in the Yang-Mills theory with mass gap, we propose to investigate the massive Yang-Mills model, namely, Yang-Mills theory wit…
How to extract the "Abelian" part of double-winding Wilson loop
Ryutaro Matsudo
It is known that the naive Abelian Wilson loop defined by the Abelian projection cannot reproduce the correct behavior of the double-winding Wilson loop. It is also known that the…
How to extract the dominant part of the Wilson loop average in higher representations
Ryutaro Matsudo, Akihiro Shibata, Seikou Kato +1
In previous works, we have proposed a new formulation of Yang-Mills theory on the lattice so that the so-called restricted field obtained from the gauge-covariant decomposition pla…
Reflection positivity and complex analysis of the Yang-Mills theory from a viewpoint of gluon confinement
Kei-Ichi Kondo, Masaki Watanabe, Yui Hayashi +2
In order to understand the confining decoupling solution of the Yang-Mills theory in the Landau gauge, we consider the massive Yang-Mills model which is defined by just adding a gl…
Correct way to extract dominant part of the Wilson loop in higher representations
Ryutaro Matsudo, Akihiro Shibata, Seikou Kato +1
The Abelian dominance for the string tension was shown for the fundamental sources in MA gauge in the lattice simulations. For higher representations, however, it is also known tha…
Confinement of quarks in higher representations in view of dual superconductivity
Akihiro Shibata, Ryutaro Matsudo, Seikou Kato +1
Dual superconductor picture is one of the most promising scenarios for quark confinement. We have proposed a new formulation of Yang-Mills theory on the lattice so that the so-call…
Mass-deformed Yang-Mills theory in the covariant gauge and its gauge-invariant extension through the gauge-independent BEH mechanism
Kei-Ichi Kondo, Yutaro Suda, Masaki Ohuchi +2
In this talk we consider the mass-deformed Yang-Mills theory in the covariant gauge which is obtained by just adding a gluon mass term to the Yang-Mills theory with the covariant g…
Composite operator and condensate in Yang-Mills theory with stability group
Matthias Warschinke, Ryutaro Matsudo, Shogo Nishino +2
Recently, a reformulation of the Yang-Mills theory inspired by the Cho-Faddeev-Niemi decomposition has been developed in order to understand confinement from the viewpoint…
Magnetic monopoles in pure Yang--Mills theory with a gauge-invariant mass
Shogo Nishino, Ryutaro Matsudo, Matthias Warschinke +1
In this paper, we show the existence of magnetic monopoles in the pure Yang--Mills theory even in absence of scalar fields when the gauge-invariant mass term is introduced.…
Lattice study of area law for double-winding Wilson loops
Akihiro Shibata, Seikou Kato, Kei-Ichi Kondo +1
We study the double-winding Wilson loops in the SU(N) Yang-Mills theory on the lattice. We discuss how the area law falloff of the double-winding Wilson loop average is modified by…
Double-winding Wilson loop in Yang-Mills theory: A criterion for testing the confinement models
Ryutaro Matsudo, Kei-Ichi Kondo, Akihiro Shibata
We examine how the average of double-winding Wilson loops depends on the number of color in the Yang-Mills theory. In the case where the two loops and are i…
Composite operator and condensate in the Yang-Mills theory with stability group
Matthias Warschinke, Ryutaro Matsudo, Shogo Nishino +2
Recently, some reformulations of the Yang-Mills theory inspired by the Cho-Faddeev-Niemi decomposition have been developed in order to understand confinement from the viewpoint of…
Double-winding Wilson loops in the Yang-Mills theory
Ryutaro Matsudo, Kei-Ichi Kondo
We consider double-winding, triple-winding and multiple-winding Wilson loops in the Yang-Mills gauge theory. We examine how the area law falloff of the vacuum expectation v…