Adler Function from R E + E (s) Measurements: Experiments Vs Qcd Theory 1
نویسنده
چکیده
An experimentally motivated QCD analysis of the behaviour of the Adler D-function in the Euclidian region is described. It is stressed that by taking account of b-quark mass-dependent s-e ects one obtains better agreement between theoretical predictions and experimentally motivated behaviour of the D-function at large Euclidian momentum transfer. A more detailed analysis of QCD predictions, including information on quark and gluon condensates, requires more precise data on ee ! hadrons, particularly in the energy regions E < MJ= and MJ= < E < 3:6 GeV. Use of experimental determination of the D-function to test the generalized Crewther relation is outlined. MIRAMARE { TRIESTE June 1999 Contributed to the Proceedings of the International Workshop \ee collisions from to J/ ", Novosibirsk, 1-5 March, 1999.
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