Determination of the scalar glueball mass in QCD sum rules - art. no. 034026.

The 0(++) glueball mass is analyzed in the QCD sum rules. We show that in o rder 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 into account the radiative corrections; (3) to estim ate an additional contribution to the glueball mass from the lowest lying ( q) over bar q resonance. We conclude that the key point is to choose suitab le moments to determine the 0(++) glueball mass; the radiative corrections do not affect it sensitively and the composite resonance has little effect on it. [S0556-2821(99)01803-2].