Quark Effects in the Gluon Condensate Contribution to the Scalar Glueball Correlation Function

Details Quark Effects in the Gluon Condensate Contribution to the Scalar Glueball Correlation Function Quark Effects in the Gluon Condensate Contribution to the Scalar Glueball Correlation Function

2004-10-28

arxiv.org/abs/hep-ph/0410388v1

JHEP 0412:037,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

latex2e, 6 pages, 7 figures embedded in latex file

Scientific paper

10.1088/1126-6708/2004/12/037

One-loop quark contributions to the dimension-four gluon condensate term in the operator product expansion (OPE) of the scalar glueball correlation function are calculated in the MS-bar scheme in the chiral limit of $n_f$ quark flavours. The presence of quark effects is shown not to alter the cancellation of infrared (IR) singularities in the gluon condensate OPE coefficients. The dimension-four gluonic condensate term represents the leading power corrections to the scalar glueball correlator and, therein, the one-loop logarithmic contributions provide the most important condensate contribution to those QCD sum-rules independent of the low-energy theorem (the subtracted sum-rules).

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