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

D. Harnett | Zendy; T. G. Steele | Zendy

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

Author(s) -

D. Harnett,

T. G. Steele

Publication year - 2004

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2004/12/037

Subject(s) - glueball , gluon condensate , physics , gluon , particle physics , quantum chromodynamics , quark , scalar (mathematics) , operator product expansion , quantum electrodynamics , mathematical physics , geometry , mathematics

One-loop quark contributions to the dimension-four gluon condensate term inthe operator product expansion (OPE) of the scalar glueball correlationfunction are calculated in the MS-bar scheme in the chiral limit of $n_f$ quarkflavours. The presence of quark effects is shown not to alter the cancellationof infrared (IR) singularities in the gluon condensate OPE coefficients. Thedimension-four gluonic condensate term represents the leading power correctionsto the scalar glueball correlator and, therein, the one-loop logarithmiccontributions provide the most important condensate contribution to those QCDsum-rules independent of the low-energy theorem (the subtracted sum-rules).Comment: latex2e, 6 pages, 7 figures embedded in latex fil

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