Exploring the Structure of a Possible Light Scalar Nonet(§4. Meson Spectroscopy and Quark Model,Possible Existence of the σ-Meson and Its Implications to Hadron Physics)

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概要

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• We first review the work of the Syracuse group, which uses an effective chiral Lagrangian approach, on meson-meson scattering. An illustration providing evidence for the existence of a strange scalar resonance of mass around 900 MeV is given. An attempt to fit this κ(900) together with a similarly obtained σ(560) and the well known a_0(980) and f_0(980) into a nonet pattern. suggests that the underlying structure is closer to a dual quark-dual antiquark than to a quark-antiquark. A possible mechanism to explain a next higher-in mass scalar meson nonet is also discussed. This involves mixing between qq^^- and qqq^^-q^^- states.

• 素粒子論グループ 素粒子研究編集部の論文
• 2001-02-20

著者

• SCHECHTER Joseph

  Department of Physics, Syracuse University

• Black Deirdre

  Department Of Physics Cavendish Laboratory University Of Cambridge

• Black Deirdre

  Department Of Physics Syracuse University

• Schechter Joseph

  Department Of Physics Syracuse University

• FARIBORZ Amir

  Department of Physics, Syracuse University

• Fariborz Amir

  Department Of Physics Syracuse University

関連論文

• Two or Four : A Hint from Scalar Mesons in Radiative φ Decays?(Tetraquarks and related topics, Exotic hadrons, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)
• Exploring the Structure of a Possible Light Scalar Nonet(§4. Meson Spectroscopy and Quark Model,Possible Existence of the σ-Meson and Its Implications to Hadron Physics)

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