T. Nishikawa

activity

20032024

most citedMixings of 4-quark components in light non-singlet scalar mesons in QCD sum rules

38 citations · 79 across the 8 of their papers we have counts for

collaborators

Showing 2004 · hep-phShow all

5 papers · 2 filters

hep-ph2004

Theta++ from QCD sum rule

Tetsuo Nishikawa, Yoshiko Kanada-En'yo, Osamu Morimatsu +1

We study the pentaquark $uu dd s ˉ$ with $J = 3/2$ and I=1 ( $Θ^{++}$ ) in the QCD sum rule approach. We derive the QCD sum rules for positive and negative parity states of the pentaq…

hep-ph2004

Spin-3/2 pentaquark in the QCD sum rule

Tetsuo Nishikawa, Yoshiko Kanada-En'yo, Yoshihiko Kondo +1

We study $I J^{P} = 0 3/2^{\pm}$ and $1 3/2^{\pm}$ pentaquark states with $S = + 1$ in the QCD sum rule approach. The QCD sum rule for positive parity states and that for negative parity are…

hep-ph2004

Flavour-singlet g_A and the QCD sum rule incorporating instanton effects

Tetsuo Nishikawa

We derive a QCD sum rule for the flavour-singlet axial coupling constant $g_{A}^{(0)}$ from a two point correlation function of flavour-singlet axial vector currents in a one-nucleon…

hep-ph2004

Quantum Hall States of Gluons in Quark Matter

Aiichi Iwazaki, Osamu Morimatsu, Munehisa Ohtani +1

We have recently shown that dense quark matter possesses a color ferromagnetic phase in which a stable color magnetic field arises spontaneously. This ferromagnetic state has been…

hep-ph2004

Prediction of Narrow $J^{π} = 1/ 2^{+}$ , $3/ 2^{+}$ , and $3/ 2^{-}$ states of $Θ_{+}$ in a Quark model with Antisymmetrized Molecular Dynamics

Y. Kanada-En'yo, O. Morimatsu, T. Nishikawa

The exotic baryon $Θ^{+} (uu dd s ˉ)$ is studied with microscopic calculations in a quark model by using a method of antisymmetrized molecular dynamics. We predict that the lowest e…

Theta++ from QCD sum rule

Spin-3/2 pentaquark in the QCD sum rule

Flavour-singlet g_A and the QCD sum rule incorporating instanton effects

Quantum Hall States of Gluons in Quark Matter

Prediction of Narrow Jπ=1/2+, 3/2+, and 3/2− states of Θ+​ in a Quark model with Antisymmetrized Molecular Dynamics

Prediction of Narrow $J^{π} = 1/ 2^{+}$ , $3/ 2^{+}$ , and $3/ 2^{-}$ states of $Θ_{+}$ in a Quark model with Antisymmetrized Molecular Dynamics