97 citations · 103 across the 4 of their papers we have counts for
12 papers · 1 filter
Shear viscosity of hadronic gas mixtures
K. Itakura, O. Morimatsu, H. Otomo
We investigate the effects of baryon chemical potential μon the shear viscosity coefficient ηand the viscosity to entropy density ratio η/s of a pion-nucleon gas mixture. We find t…
Shear viscosity of a hadronic gas mixture
Kazunori Itakura, Osamu Morimatsu, Hiroshi Otomo
We discuss in detail the shear viscosity coefficient eta and the viscosity to entropy density ratio eta/s of a hadronic gas comprised of pions and nucleons. In particular, we study…
Positive and negative-parity flavor-octet baryons in coupled QCD sum rules
Yoshihiko Kondo, Osamu Morimatsu, Tetsuo Nishikawa +1
We apply the method of the QCD sum rule, in which positive- and negative-parity baryons couple with each other, to the flavor-octet hyperons and investigate the parity splittings.…
Renormalization group equations in a model of generalized hidden local symmetry and restoration of chiral symmetry
Yoshimasa Hidaka, Osamu Morimatsu, Munehisa Ohtani
We study possible restoration patterns of chiral symmetry in a generalized hidden local symmetry model, which is a low energy effective theory of QCD including pseudo-scalar, vecto…
Coupled QCD sum rules for positive and negative-parity nucleons
Yoshihiko Kondo, Osamu Morimatsu, Tetsuo Nishikawa
A new approach of the QCD sum rule is proposed in which positive and negative-parity baryons couple with each other. With positive and negative-parity states explicitly taken into…
Axial vector tetraquark with S=+2
Y. Kanada-En'yo, O. Morimatsu, T. Nishikawa
Possibility of an axial vector isoscalar tetraquark with is discussed. If the pentaquark has the configuration,…