145 citations · 886 across the 44 of their papers we have counts for
15 papers · 1 filter
Probing QCD Phase Structure by Baryon Multiplicity Distribution
Atsushi Nakamura, Keitaro Nagata
The canonical partition functions and the number distributions which are obervable in experiments, are related by a single parameter, the fugacities . With…
Quartet of spin-3/2 baryons in chiral multiplet with mirror assignment
Keitaro Nagata
We study the possible existence of chiral partners in the spin-$\thalf$ sector of the baryon spectrum. We consider a quartet scheme where four spin-3/2 baryons, , ,…
A Lagrangian for the Chiral (1/2,0) + (0,1/2) Quartet Nucleon Resonances
V. Dmitrasinovic, A. Hosaka, K. Nagata
We study the nucleon and three N* resonances' properties in an effective linear realization chiral SU_L(2) x SU_R(2) and U_A(1) symmetric Lagrangian. We place the nucleon fields in…
Nucleon axial couplings and [(1/2,0) + (0,1/2)]-[(1,1/2) + (1/2,1)] chiral multiplet mixing
V. Dmitrasinovic, A. Hosaka, K. Nagata
Three-quark nucleon interpolating fields in QCD have well-defined SU_L(2) x SU_R(2) and U_A(1) chiral transformation properties. Mixing of the [(1,1/2) + (1/2,1)] chiral multiplet…
Origin of Generalized Adler-Weisberger Sum Rule for the Nucleon and
Keitaro Nagata
We derive a relation for the axial-coupling constants of the nucleon and spin-3/2 baryons including the with the use of an invariant Lagrangian. T…
Chiral Properties of Baryon Fields with Flavor SU(3) Symmetry
Hua-Xing Chen, V. Dmitrasinovic, Atsushi Hosaka +2
We investigate chiral properties of local (non-derivative) fields of baryons consisting of three quarks with flavor SU(3) symmetry. We construct explicitly independent local three-…
and Couplings of the and its Chiral Partners
K. Nagata, A. Hosaka, V. Dmitrasinovic
We investigate the interactions and chiral properties of the four spin-$\thalf$-baryons : , , and together with the nucleon. W…
Structure of the Nucleon and Roper Resonance with Diquark Correlations
K. Nagata, A. Hosaka
We investigate the electric form factors of the nucleon and Roper resonance using a quark-diquark model. We find that the charge radii of the nucleon and Roper resonance are almost…
Structure of the Roper Resonance with Diquark Correlations
Keitaro Nagata, Atsushi Hosaka
We study electromagnetic properties of the nucleon and Roper resonance in a chiral quark-diquark model including two kinds of diquarks needed to describe the nucleon: scalar and ax…
Chiral Properties of Baryon Interpolating Fields
Keitaro Nagata, Atsushi Hosaka, V. Dmitrašinovi\' c
We study the chiral transformation properties of all possible local (non-derivative) interpolating field operators for baryons consisting of three quarks with two flavors, assuming…
The Nucleon and Roper Resonance in a Chiral Quark Diquark Model
Keitaro Nagata, Atsushi Hosaka
A description of the nucleon and Roper resonance in a quark-diquark approach is presented. We show that two states with the quantum number of the nucleon can appear in the ground s…
Path-integral approach in a chiral quark-diquark model to the nucleon structure and interactions
Keitaro Nagata, Atsushi Hosaka
We study the structure of the nuclear force by using a path-integral hadronization approach in a chiral quark-diquark model. After the construction of the chiral quark-diquark mode…
Two Nucleon-States in a Chiral Quark-Diquark Model
Keitaro Nagata, Atsushi Hosaka
We study the ground and first excited states of nucleons in a chiral quark-diquark model. We include two quark-diquark channels of the scalar-isoscalar and axial-vector-isovector t…
The mass of the nucleon in a chiral quark-diquark model
K. Nagata, A. Hosaka, L. J. Abu-Raddad
The mass of the nucleon is studied in a chiral quark-diquark model. Both scalar and axial-vector diquarks are taken into account for the construction of the nucleon state. After th…
Structure of the nuclear force in a chiral quark-diquark model
K. Nagata, A. Hosaka
We discuss the structure of the nuclear force using a lagrangian derived from hadronization of a chiral quark and diquark model. A generalized trace log formula including meson and…