Determination of the scalar glueball mass in QCD sum rules
Abstract
The 0++ glueball mass is analyzed in the QCD sum rules. We show that in order to determine the 0++ glueball mass by using the QCD sum rules method, it is necessary to clarify the following three ingredients: (1) to choose the appropriate moment with acceptable parameters which satisfy all of the criteria; (2) to take account into the radiative corrections; (3) to estimate an additional contribution to the glueball mass from the lowest lying qq resonance. We conclude that it is the key point to choose suitable moments to determine the 0++ glueball mass, the radiative corrections do not affect it sensitively and the composite resonance have a little effect on it.
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