Next-to-Leading Order QCD Corrections to the Polarized Photoproduction of Heavy Flavors

Details Next-to-Leading Order QCD Corrections to the Polarized Photoproduction of Heavy Flavors Next-to-Leading Order QCD Corrections to the Polarized Photoproduction of Heavy Flavors

1998-04-21

arxiv.org/abs/hep-ph/9804353v1

Phys.Lett. B433 (1998) 411-418

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, LaTeX, 4 figures, uses epsfig and amssymb styles

Scientific paper

10.1016/S0370-2693(98)00723-0

We present a calculation of the next-to-leading order (O(alpha_s^2 alpha)) QCD corrections to heavy flavor photoproduction with longitudinally polarized beams. We apply our results to study the longitudinal spin asymmetry for the total charm quark production cross section which will be utilized by the forthcoming COMPASS experiment at CERN to obtain first direct information on the polarized gluon density Delta g. We also briefly discuss the main theoretical uncertainties inherent in this calculation. In particular we demonstrate that the factorization scale dependence is considerably reduced in next-to-leading order.

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