Inevitable Pentaquark(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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• The experimental status of the pentaquark searches is briefly reviewed. Recent null results by the CLAS collaboration are commented, and new strong evidence of a very narrow Θ^+ resonance by the DIANA collaboration is presented. On the theory side, we revisit the argument against the existence of the pentaquark-that of Callan and Klebanov-and show that actually a strong resonance is predicted in that approach, however its width is grossly overestimated. A recent calculation gives 2 MeV for the pentaquark width, and this number is probably still an upper bound.

• 2007-11-09

著者

• Diakonov Dmitri

  Petersburg Nuclear Physics Inst. St. Petersburg Rus

関連論文

• Ordinary and Exotic Baryons, Strange and Charmed, in the Relativistic Mean Field Approach(Exotic Hadrons,New Frontiers in QCD 2010-Exotic Hadron Systems and Dense Matter-)
• Inevitable Pentaquark(Pentaquarks and related topics, Exotic hadrons, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)

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