Large next-to-leading order QCD corrections to pentaquark sum rules

Details Large next-to-leading order QCD corrections to pentaquark sum rules Large next-to-leading order QCD corrections to pentaquark sum rules

2006-03-27

arxiv.org/abs/hep-ph/0603220v2

Phys.Rev. D74 (2006) 017503

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, including 3 encapsulated PostScript figures

Scientific paper

10.1103/PhysRevD.74.017503

Using configuration space techniques, we calculate next-to-leading order (NLO) five-loop QCD corrections to the correlators of interpolating pentaquark currents in the limit of massless quarks. We obtain very large NLO corrections to the spectral density which makes a standard sum rule analysis problematic. However, the NLO corrections to the correlator in configuration space are reasonable. We discuss the implications of our results for the phenomenological sum rule analysis of pentaquark states.

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