Accessibility navigation


Photoproduction of heavy quarks in next-to-leading order QCD with longitudinally polarized initial states

Bojak, I. and Stratmann, M. (1999) Photoproduction of heavy quarks in next-to-leading order QCD with longitudinally polarized initial states. Nuclear Physics B, 540 (1-2). pp. 345-381. ISSN 0550-3213

Full text not archived in this repository.

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1016/S0550-3213(98)00751-2

Abstract/Summary

We present all relevant details of our calculation of the complete next-to-leading order O(αS2α) QCD corrections to heavy flavor photoproduction with longitudinally polarized point-like photons and hadrons. In particular we provide analytical results for the virtual plus soft gluon cross section. We carefully address the relevance of remaining theoretical uncertainties by varying, for instance, the factorization and renormalization scales independently. Such studies are of importance for a meaningful first direct determination of the polarized gluon density Δg from the total charm production spin asymmetry by the upcoming COMPASS experiment. It is shown that the scale uncertainty is considerably reduced in next-to-leading order, but the dependence on the charm quark mass is sizable at fixed target energies. Finally, we study several differential single-inclusive heavy quark distributions and, for the polarized HERA option, the total bottom spin asymmetry.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Centre for Integrative Neuroscience and Neurodynamics (CINN)
ID Code:32516
Uncontrolled Keywords:Perturbative QCD; Next-to-leading order calculation; Spin-dependent photoproduction; Heavy quarks; Polarized gluon distribution; HVBM prescription
Publisher:Elsevier

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation