Journalartikel

Jahr der Veröffentlichung: 2007

Zeitschrift: Physical Review D

Bandnummer: 75

Heftnummer: 1

ISSN: 1550-7998

eISSN: 1550-2368

DOI Link: https://doi.org/10.1103/PhysRevD.75.014016

Verlag: American Physical Society

Abstract: 
We calculate the effects of next-to-leading order perturbative QCD as well as of the quark transverse motion and off-shellness on the Drell-Yan process cross section. By studying the s ->infinity behavior of the cross section in these approaches, we find that the effects of quark off-shellness and intrinsic-k(T) parametrize those of higher twists. In particular, the off-shellness of partons generates part of the K-factor type corrections to the leading order cross section. Higher-twist contributions to the p(T)-spectrum of the Drell-Yan pairs are found to be large for presently accessible energies. The evolution of quark off-shellness distribution with the hard scale is also studied.

Harvard-Zitierstil: Linnyk, O., Leupold, S. and Mosel, U. (2007) Next-to-leading order versus quark off-shellness and intrinsic kT in the Drell-Yan process, Physical Review D, 75(1), Article 014016. https://doi.org/10.1103/PhysRevD.75.014016

APA-Zitierstil: Linnyk, O., Leupold, S., & Mosel, U. (2007). Next-to-leading order versus quark off-shellness and intrinsic kT in the Drell-Yan process. Physical Review D. 75(1), Article 014016. https://doi.org/10.1103/PhysRevD.75.014016