12 citations · 15 across the 9 of their papers we have counts for
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Non-interacting KN contribution in the QCD sum rule for the pentaquark Theta^+(1540)
Youngshin Kwon, Atsushi Hosaka, Su Houng Lee
We perform a QCD sum rule analysis for the pentaquark baryon Theta^+ with the non-interacting contribution treated carefully. The coupling of the Theta^+ current to the s…
Phenomenology of spin 3/2 baryons with pentaquarks
Tetsuo Hyodo, Atsushi Hosaka
We examine several assignments of spin and parity for the pentaquark Theta+ state (J^P=1/2^{+,-}, 3/2^{+,-}) in connection with known baryon resonances. Assuming that the Theta+ be…
Photoproduction of Lambda(1520,3/2^-)
Seung-Il Nam, Atsushi Hosaka, Hyun-Chul Kim
We investigate the photoproduction of Lambda(1520,3/2^-) via the gamma N -> K Lambda^* reaction using the Born approximation and the Rariata-Schwinger vector-spinor field for the s…
Structure and production of Theta+
A. Hosaka
We study properties of the pentaquark particle Theta+ with emphasis on the role of chiral symmetry. It is shown that when chiral force is sufficiently strong, the positive parity T…
Regulariztion dependence of S=0 and S=-1 meson-baryon system in the chiral unitary model
S. I. Nam, H. -Ch. KIm, T. Hyodo +2
We investigate the dependence of s-wave meson-baryon scattering amplitudes on different regularizations within the framework of the chiral unitary model. We employ two different re…
Phenomenological Study of Excited Baryons
A. Hosaka
We study baryon excited states for quark confinement and chiral symmetry breaking. In the first part we discuss spatially deformed baryon excitations. As signals of deformation, we…