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We study several azimuthal asymmetries in semi-inclusive deep inelasticscattering and in Drell-Yan, interpreting them in the framework of theformalism of the quark correlator, with a particular reference to T-oddfunctions. The correlator contains an undetermined energy scale, which we fixon the basis of a simple and rather general argument. We find a different valuethan the one assumed in previous treatments of T-odd functions. This impliesdifferent predictions on the Q^2 dependence of the above mentioned asymmetries.Our result about the azimuthal asymmetry of unpolarized Drell-Yan agrees withpresently available data, contrary to the alternative assumption on the scale.Predictions on other azimuthal asymmetries could be tested against data ofplanned experiments on Drell-Yan and semi-inclusive deep inelastic scattering.Comment: 37 pages, 7 figure

Q2DEPENDENCE OF AZIMUTHAL ASYMMETRIES IN SEMIINCLUSIVE DEEP INELASTIC SCATTERING AND IN DRELL–YAN

Q²DEPENDENCE OF AZIMUTHAL ASYMMETRIES IN SEMIINCLUSIVE DEEP INELASTIC SCATTERING AND IN DRELL–YAN