Instanton Effects on the Role of the Low-Energy Theorem for the Scalar Gluonic Correlation Function

Details Instanton Effects on the Role of the Low-Energy Theorem for the Scalar Gluonic Correlation Function Instanton Effects on the Role of the Low-Energy Theorem for the Scalar Gluonic Correlation Function

2000-07-05

arxiv.org/abs/hep-ph/0007049v3

Nucl.Phys. A686 (2001) 393-412

Physics

High Energy Physics

High Energy Physics - Phenomenology

latex2e, 12 pages, 10 encapsulated postscript figures. Revised version includes additional analysis, figures, and references

Scientific paper

10.1016/S0375-9474(00)00567-4

Instanton contributions to the Laplace sum-rules for correlation functions of scalar gluonic currents are calculated. The role of the constant low-energy theorem term, whose substantial contribution is unique to the leading Laplace sum-rule $L_{-1}$, is shown to be diminished by instanton contributions, significantly increasing the resulting mass bounds for the ground state of scalar gluonium and improving compatibility with results from higher-weight sum-rules.

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