Detailed Analysis of the Chiral Unitary Model for Meson-Baryon Scattering with Flavor SU(3) Breaking Effects(Nuclear Physics)

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概要

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• We study s-wave meson-baryon scattering using the chiral unitary model. We consider 1/2^- baryon resonances as quasibound states of the low lying mesons (π, Κ, η) and baryons (Ν, Λ, Σ, Ξ). In previous works, the subtraction constants which appear in loop integrals were found to largely depend on the channels, and it was necessary to fit these constants to reproduce the data. In order to extend this model to all channels with fewer parameters, we introduce flavor SU(3) breaking interactions in the framework of chiral perturbation theory. It is found, however, that the observed SU(3) breaking in meson-baryon scattering cannot be explained by the present SU(3) breaking interactions. The role and importance of the subtraction constants in the present framework are discussed.

• 理論物理学刊行会の論文
• 2004-07-25

著者

• Jido Daisuke

  European Centre For Theoretical Studies In Nuclear Physics And Related Areas (ect)

• Hosaka A

  Rcnp Osaka Univ.

• Hosaka Atsushi

  Research Center For Nuclear Physics Osaka University

• Hosaka Atsushi

  Research Center For Nuclear Physics (rcnp)

• Hosaka Atsushi

  Reseaich Center For Nuclear Physics (rcnp)

• Haga Akihiro

  Research Center For Nuclear Physics (rcnp) Osaka University

• Hyodo Tetsuo

  Yukawa Institute For Theoretical Physics Kyoto University

• Nam Seung-il

  Research Center For Nuclear Physics (rcnp):department Of Physics Pusan National University

• HYODO Tetsuo

  Research Center for Nuclear Physics (RCNP)

• JIDO Daisuke

  Research Center for Nuclear Physics (RCNP)

• NAM Seung-il

  Research Center for Nuclear Physics (RCNP):Department of Physics, Pusan National University

• JIDO Daisuke

  Research Center for Nuclear Physics (RCNP):(Present address)ECT, European Centre for Theoretical Studies in Nuclear Physics and Related Areas Villa Tambosi

• HOSAKA Atsushi

  Department of Physics, University of Pennsylvania

• Hosaka Atsushi

  Department of Radiology, The University of Tokyo

関連論文

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• Thermodynamics of Quantum Ultra-Cold Neutron Gas under Gravity of the Earth
• Meson-Induced Pentaquark Productions

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