A Faddeev Calculation for Pentaquark Θ^+ in Diquark Picture with Nambu-Jona-Lasinio Type Interaction(Pentaquarks and related topics, Exotic hadrons, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)

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概要

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• A Bethe-Salpeter-Faddeev (BSF) calculation is performed for the pentaquark Θ^+ in the diquark picture of Jaffe and Wilczek in which Θ^+ is a diquark-diquark-s three-body system. Nambu-Jona-Lasinio (NJL) model is used to calculate the lowest order diagrams in the two-body scatterings of sD and DD. With the use of coupling constants determined from the meson sector, we find that sD interaction is attractive while DD interaction is repulsive. However, we cannot find a bound 1/2^+ pentaquark state. Instead, a bound pentaquark Θ^+ in 1/2^- channel is obtained with unphysically strong vector mesonic coupling constants.

• 理論物理学刊行会の論文
• 2007-11-09

著者

• Yang Shin

  Department Of Physics National Taiwan University

• Tsushima Kazuo

  National Center For Theoretical Sciences National Taiwan University:grupo De Fisica Nuclear And Iuff

• MINEO H.

  Department of Physics, National Taiwan University

• TJON J.

  Department of Physics, National Taiwan University

• Tjon J.

  Department Of Physics National Taiwan University:kvi University Of Groningen

• TSUSHIMA Kazuo

  National Center for Theoretical Sciences, National Taiwan University:Grupo de Fisica Nuclear and IUFFyM, Universidad de Salamanca

• Tjon J.

  Department of Physics, National Taiwan University:KVI, University of Groningen

• YANG Shin

  Department of Physics, National Taiwan University

関連論文

• A Faddeev Calculation for Pentaquark Θ^+ in Diquark Picture with Nambu-Jona-Lasinio Type Interaction(Pentaquarks and related topics, Exotic hadrons, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)

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