Reanalysis the pentaquark $Θ^+(1540)$ in the framework of QCD sum rules approach with direct instantons

Details Reanalysis the pentaquark $Θ^+(1540)$ in the framework of QCD sum rules approach with direct instantons Reanalysis the pentaquark $Θ^+(1540)$ in the framework of QCD sum rules approach with direct instantons

2005-01-04

arxiv.org/abs/hep-ph/0501015v5

Commun.Theor.Phys.45:320-324,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, fifth version, add discussions

Scientific paper

10.1088/0253-6102/45/2/025

In this article, we study the pentaquark state $ \Theta^+(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.

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