Extracting Boer-Mulders functions from $p+D$ Drell-Yan processes

Abstract

We extract the Boer-Mulders functions of valence and sea quarks in the proton from unpolarized $p+D$ Drell-Yan data measured by the FNAL E866 Collaboration. Using these Boer-Mulders functions, we calculate the $\cos 2\varphi$ asymmetries in unpolarized $pp$ Drell-Yan processes, both for the FNAL E866/NuSea and the BNL Relativistic Heavy Ion Collider (RHIC) experiments. We also estimate the $\cos 2\varphi$ asymmetries in the unpolarized $p\bar{p}$ Drell-Yan processes at GSI.

5 latex pages, 6 figures, correction made in acknowledgement

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• Transverse-momentum distributions in a diquark spectator model
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