Instantons and Glueballs
نویسنده
چکیده
We investigate the impact of instantons on scalar glueball properties in a largely model-independent analytical approach based on the instantonimproved operator product expansion (IOPE) of the 0++ glueball correlator. The instanton contributions turn out to be dominant, to substantially improve the consistency of the correponding QCD sum rules, and to increase the glueball residue about fivefold.
منابع مشابه
ar X iv : h ep - p h / 94 10 37 2 v 2 1 S ep 1 99 5 Glueballs and Instantons
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تاریخ انتشار 2001