Intrinsic transverse momentum and the polarized Drell-Yan process

Details Intrinsic transverse momentum and the polarized Drell-Yan process Intrinsic transverse momentum and the polarized Drell-Yan process

1994-03-04

arxiv.org/abs/hep-ph/9403227v2

Phys.Rev.D51:3357-3372,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, REVTEX 3.0 (3 figures included in separate LATEX file using feynman.tex), NIKHEF-94-P1 (Revised version)

Scientific paper

10.1103/PhysRevD.51.3357

In this paper we study the cross section at leading order in $1/Q$ for polarized Drell-Yan scattering at measured lepton-pair transverse momentum $Q_T$. We find that for a hadron with spin $1/2$ the quark content at leading order is described by six distribution functions for each flavor, which depend on both the lightcone momentum fraction $x$, and the quark transverse momentum $\bbox{k}_T^2$. These functions are illustrated for a free-quark ensemble. The cross sections for both longitudinal and transverse polarizations are expressed in terms of convolution integrals over the distribution functions.

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