Polarized Heavy Quark Photoproduction in Next to Leading Order

Abstract

Results of our next-to-leading order analytic calculation for longitudinally polarized photoproduction of heavy quarks are presented. Certain differential cross sections and the corresponding asymmetries are computed for energy ranges accessible to CERN and HERA. We argue that determination of the polarized gluon distribution is possible at both places: at HERA certain acceptance cuts are necessary.

Comments: 6 pages, 3 figures, invited talk given at the Int. Workshop "Symmetry and Spin. Praha-Spin99", 5-12 Sept. 1999, Prague, to appear in proceedings