Reanalyzing Pentaquark Θ + (1540) in Framework of QCD Sum Rules Approach with Direct Instantons
نویسندگان
چکیده
منابع مشابه
Reanalysis the pentaquark Θ(1540) in the framework of QCD sum rules approach with direct instantons
In this article, we study the pentaquark state Θ+(1540) with a (scalar)diquark(pseudoscalar)diquark-antiquark type interpolating current in the framework of the QCD sum rules approach by including the contributions from the direct instantons. The numerical results indicate that the contributions from the direct instantons are very small and can be safely neglected. PACS : 12.38.Aw, 12.38.Lg, 12...
متن کاملMagnetic moment of the pentaquark Θ(1540) with light-cone QCD sum rules
In this article, we study the magnetic moment of the pentaquark state Θ+(1540) as diquark-diquark-antiquark ([ud][ud]s̄) state in the framework of the light-cone QCD sum rules approach. The numerical results indicate the magnetic moment of the pentaquark state Θ+(1540) is about μΘ+ = −(0.49± 0.06)μN . PACS : 12.38.Aw, 12.38.Lg, 12.39.Ba, 12.39.-x
متن کاملDecay width of the pentaquark state Θ(1540) with QCD sum rules
In this article, we study the decay width of the pentaquark state Θ(1540) with the QCD sum rules approach. The numerical results indicate the strong coupling constant gΘNK is about |gΘNK | = 0.26± 0.7, which can explain the narrow decay width naturally. PACS : 12.38.Aw, 12.38.Lg, 12.39.Ba, 12.39.-x
متن کاملMagnetic moment of the pentaquark Θ(1540) with QCD sum rules
In this article, we study the magnetic moment of the pentaquark state Θ+(1540) with the QCD sum rules approach in the external electromagnetic field. The numerical results indicate the magnetic moment of the pentaquark state Θ+(1540) is about μΘ+ = (0.24 ± 0.02)μN . PACS : 12.38.Aw, 12.38.Lg, 12.39.Ba, 12.39.-x
متن کاملMagnetic moment of the pentaquark Θ(1540) as diquark-diquark-antiquark state with QCD sum rules
In this article, we study the magnetic moment of the pentaquark state Θ+(1540) as diquark-diquark-antiquark ([ud][ud]s̄) state with the QCD sum rules in the external weak electromagnetic field (EFSR) and the light-cone QCD sum rules (LCSR) respectively. The numerical results indicate the magnetic moment is about μΘ+ = −(0.11 ± 0.02)μN for the EFSR and μΘ+ ≈ −(0.1−0.5)μN for the LCSR. As the valu...
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ژورنال
عنوان ژورنال: Communications in Theoretical Physics
سال: 2006
ISSN: 0253-6102
DOI: 10.1088/0253-6102/45/2/025