QCD duality and the mass of the charm quark

The mass of the charm quark is analyzed in the context of QCD finite energy sum rules using recent BESII e(+)e(-) annihilation data and a large moment um expansion of the QCD correlator which incorporates terms to order alpha (2)(s)(m(c)(2)/q(2))(6). Using various versions of duality, we obtain the c onsistent result m(c)(m(c)) = (1.37 0.09) GeV. Our result is quite independ ent of the ones based on the inverse moment analysis. (C) 2001 Elsevier Sci ence B.V. All rights reserved.