Magnetic moment of the pentaquark Θ+(1540) as diquark-diquark-antiquark state with QCD sum rules
Department of Physics, North China Electric Power University, 071003, Baoding, P.R. China
2 Department of Modern Physics, University of Science and Technology of China, 230026, Hefei, P.R. China
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In this article, we study the magnetic moment of the pentaquark state Θ+(1540) as a diquark-diquark-antiquark () state with the QCD sum rules in an external weak electromagnetic field (EFSR) and the light-cone QCD sum rules (LCSR) respectively. The numerical results indicate that the magnetic moment is about for the EFSR and - for the LCSR. As the values obtained from the EFSR are more stable than the corresponding ones from the LCSR, is more reliable.
© Springer-Verlag, 2006