SPIN-DEPENDENT DRELL-YAN BEYOND LEADING ORDER - NON-SINGLET CORRECTIONS TO O(ALPHA(2)(S))

We present parton-level analytical results for the next-to-leading ord er non-singlet virtual and real corrections to the Drell-Yan different ial cross-section. The dependence of the differential cross section on the helicity of the initial state partons is shown explicitly (the sp ins of the final state partons are summed). The calculation is impleme nted in dimensional regularization within the <(MS)over bar> scheme an d with the 't Hooft-Veltman prescriptions for the n-dimensional gamma( 5). Both the polarized initial state and the unpolarized cross section s can be obtained from our result. Our unpolarized cross section agree s with the previous result of Ellis, Martinelli and Petronzio in the n on-singlet sector. (C) 1997 Published by Elsevier Science B.V.