273 citations · 1.8k across the 47 of their papers we have counts for
39 papers · 1 filter
Massive neutron stars with small radii in relativistic mean-field models optimized to nuclear ground states
Tsuyoshi Miyatsu, Myung-Ki Cheoun, Kyungsik Kim +1
We present an equation of state (EoS) for neutron stars using the relativistic mean-field model with isoscalar- and isovector-meson mixing. Taking into account the results of the n…
Asymmetric nuclear matter in relativistic mean-field models with isoscalar- and isovector-meson mixing
Tsuyoshi Miyatsu, Myung-Ki Cheoun, Koichi Saito
Using the relativistic mean-field model with nonlinear couplings between the isoscalar and isovector mesons, we study the properties of isospin-asymmetric nuclear matter. Not only…
Towards a Unified Model of Neutrino-Nucleus Reactions for Neutrino Oscillation Experiments
S. X. Nakamura, H. Kamano, Y. Hayato +8
A precise description of neutrino-nucleus reactions will play a key role in addressing fundamental questions such as the leptonic CP violation and the neutrino mass hierarchy throu…
Clustering effects for explaining an anomalous JLab result on the Be-9 structure function
M. Hirai, S. Kumano, K. Saito +1
An anomalous nuclear modification was reported by JLab measurements on the beryllium-9 structure function F_2. It is unexpected in the sense that a nuclear modification slope is to…
Fermi matrix element with isospin breaking
P. A. M. Guichon, A. W. Thomas, K. Saito
Prompted by the level of accuracy now being achieved in tests of the unitarity of the CKM matrix, we consider the possible modification of the Fermi matrix element for the -deca…
Hyperons in nuclear matter
T. Miyatsu, K. Saito
The chiral version of the QMC model, in which the effect of gluon and pion exchanges is included self-consistently, is applied to the hyperons in a nuclear medium. The hyperfine in…
Quark-meson coupling model with the cloudy bag
S. Nagai, T. Miyatsu, K. Saito +1
Using the volume coupling version of the cloudy bag model, the quark-meson coupling model is extended to study the role of pion field and the properties of nuclear matter. The exte…
Scalar and vector meson propagation in asymmetric nuclear matter
Y. Muto, K. Saito
The propagation of the scalar (σand δ) and vector (ωand ρ) mesons in an iso-asymmetric nuclear matter is studied in detail, using the Walecka model. We calculate the invariant mass…
Nucleon sigma term and quark condensate in nuclear matter
K. Tsushima, K. Saito, A. W. Thomas +1
We study the bound nucleon sigma term and the quark condensate in nuclear matter. In the quark-meson coupling (QMC) model the nuclear correction to the sigma term is small and nega…
Scalar and vector form factors of the in-medium nucleon
K. Saito, K. Tsushima
Using the quark-meson coupling model, we calculate the form factors at sigma- and omega-nucleon strong-interaction vertices in nuclear matter. The Peierls-Yoccoz projection techniq…
Bound Nucleon Form Factors, Quark-Hadron Duality, and Nuclear EMC Effect
K. Tsushima, D. H. Lu, W. Melnitchouk +2
We discuss the electromagnetic form factors, axial form factors, and structure functions of a bound nucleon in the quark-meson coupling (QMC) model. Free space nucleon form factors…
Structure Functions of Unstable Lithium Isotopes
K. Saito, M. Ueda, K. Tsushima +1
We study both the spin-average and spin-dependent structure functions of the lithium isotopes, Li, which could be measured at RIKEN and other nuclear facilities in the fut…
Pions in isospin asymmetric nuclei
K. Saito, V. Guzey, K. Tsushima +1
Using a pair of the lightest mirror nuclei, He and H, we study the effect of the medium modification of pion fields on the flavor non-singlet structure function. The change…
Quarks in nuclear medium
K. Saito
Using the quark-meson coupling (QMC) model we study nuclear matter from the point of view of quark degrees of freedom. As the nucleon model we adopt the MIT bag model and the relat…
Deep inelastic scattering on asymmetric nuclei
K. Saito, C. Boros, K. Tsushima +3
We study deep inelastic scattering on isospin asymmetric nuclei. In particular, the difference of the nuclear structure functions and the Gottfried sum rule for the lightest mirror…
Effect of changes in meson properties in a nuclear medium - dissociation in nuclear matter, and meson-nucleus bound states
K. Tsushima, A. Sibirtsev, K. Saito +2
We discuss the effect of changes in meson properties in a nuclear medium on physical observables, notably, dissociation on pion and meson comovers in relativistic heavy i…
Charge symmetry breaking in mirror nuclei from quarks
K. Tsushima, K. Saito, A. W. Thomas
The binding energy differences of the valence proton and neutron of the mirror nuclei, O -- N, F -- O, Ca -- K and Sc -- Ca,…
Effect of nucleon structure variation on the longitudinal response function
K. Saito, K. Tsushima, A. W. Thomas
Using the quark-meson coupling (QMC) model, we study the longitudinal response function for quasielastic electron scattering from nuclear matter. In QMC the coupling constant betwe…
Novel features of dissociation in matter
A. Sibirtsev, K. Tsushima, K. Saito +1
We make a detailed study of the effect that the recently predicted modification of the in-medium masses of charmed mesons would have on dissociation on pion and -meson com…
A quark-meson coupling model with short-range quark-quark correlations
K. Saito, K. Tsushima, A. W. Thomas
Short-range quark-quark correlations are introduced into the quark-meson coupling (QMC) model in a simple way. The effect of these correlations on the structure of the nucleon in d…
The quark-meson coupling model
K. Saito
We review the quark-meson coupling model, in which the quark degrees of freedom are explicitly involved to describe the properties of not only nuclear matter but also finite nuclei…
Electromagnetic form factors of the bound nucleon
D. H. Lu, K. Tsushima, A. W. Thomas +2
We calculate electromagnetic form factors of the proton bound in specified orbits for several closed shell nuclei. The quark structure of the nucleon and the shell structure of the…
omega-nucleus bound states in the Walecka model
K. Saito, K. Tsushima, D. H. Lu +1
Using the Walecka model, we investigate theoretically whether an omega meson is bound to finite nuclei. We study several nuclei from ^{6}He to ^{208}Pb, and compare the results wit…
Recent results from QMC relevant to TJNAF
A. W. Thomas, D. H. Lu, K. Tsushima +2
We review recent calculations using the quark meson coupling model which should be of particular interest at Jefferson Lab. In particular, we discuss the change in the proton elect…