Exotic Hadron in Pole-Dominated QCD Sum Rules(Pentaquarks and related topics, Exotic hadrons, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)
スポンサーリンク
概要
- 論文の詳細を見る
We study pentaquark Θ^+ (I=0, J=1/2) in the QCD sum rules emphasizing that we cannot extract any properties of the pentaquark outside of the Borel window. To find the appropriate Borel window, we prepare a favorable set up of the correlators and carry out the operator product expansion up to dimension 15 within factorization hypothesis. Our procedures reduce the unwanted high energy contaminations and enhance the low energy correlation. In the Borel window, independent analyses for the chiral-even and odd sum rules give the consistent values of the Θ^+ mass, 1.68±0.22 GeV, and the residue. The parity is found to be positive.
- 理論物理学刊行会の論文
- 2007-11-09
著者
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JIDO Daisuke
Yukawa Institute for Theoretical Physics, Kyoto University
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Jido Daisuke
Yukawa Institute For Theoretical Physics Kyoto University
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KOJO Toru
RBRC, Brookhaven National Laboratory
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KOJO Toru
Department of Physics, Kyoto University
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Kojo Toru
Riken Bnl Research Center Brookhaven National Laboratory
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Kojo Toru
Department Of Physics Kyoto University
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HAYASHIGAKI Arata
Institut fur Theoretische Physik, J. W. Goethe Universitat
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Hayashigaki Arata
Institut Fur Theoretische Physik J. W. Goethe Universitat
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- QCD Sum Rules and 1/N_c Expansion(CGC/Lattice QCD/etc.,New Frontiers in QCD 2008-Fundamental Problems in Hot and/or Dense Matter-)
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