Azimuthal asymmetries in single polarized proton-proton Drell-Yan processes

Abstract

We study the azimuthal asymmetries in proton-proton Drell-Yan processes with one incident proton being transversely or longitudinally polarized. We consider particularly the asymmetries contributed by the leading-twist chiral-odd quark distributions. We analyze the asymmetries with $\sin (2\varphi +{\varphi }_S)$ and $\sin (2\varphi -{\varphi }_S)$ modulations in transverse single polarized $p^{\uparrow }p$ Drell-Yan and $\sin 2\varphi$ asymmetries in longitudinal single polarized $p^{\to }p$ Drell-Yan at RHIC, J-PARC, E906 (Fermi Lab) and NICA (JINR). We show that the measurements of the asymmetries in those facilities can provide valuable information of the chiral-odd structure of the nucleon both in the valence and sea regions.

12 latex pages, 7 figures. Final version to appear in PRD

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Cited by in corpus (6)

• The QCD Evolution of the Sivers Function
• Quark Wigner distributions in a light-cone spectator model
• Azimuthal asymmetries in lepton-pair production at a fixed-target experiment using the LHC beams (AFTER)
• Predicting the $\sin {\varphi }_S$ Single-Spin-Asymmetry of $\Lambda$ Production off transversely polarized nucleon in SIDIS
• Six-dimensional light-front Wigner distributions of the proton
• Nuclear dependences of azimuthal asymmetries in the Drell-Yan process