A NOTE ON THE QCD VACUUM TENSOR SUSCEPTIBILITY

We consider the procedure of determination of induced quark condensate s in the QCD sum rule approach. It is noted that the previous estimati ons of this value were very rough. It is shown, that the detailed anal yses of this parameter of QCD vacuum leads to the conclusion that the value of the tensor susceptibility has opposite sign and much larger t han estimations which were obtained before. The reason of this contrad iction is discussed. It is noted that naive ways of determination of i nduced condensates may lead to wrong results. The case of tensor susce ptibility is the example demonstrating the importance of the procedure which is applied for calculation of such condensates. New results for the nucleon tensor charge are presented. The tensor charge is related to the first moment of the transversity distribution function h(1)(x) . (C) 1997 Published by Elsevier Science B.V.