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arXiv · 1009.3423

Azimuthal asymmetries in unpolarized Drell-Yan processes and the Boer-Mulders distributions of antiquarks

Vincenzo Barone·Stefano Melis·Alexei Prokudin
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Abstract

Using a previous extraction of the quark Boer-Mulders distributions from semiinclusive deep inelastic scattering data, we fit the unpolarized Drell-Yan data on the $\cos 2 ϕ$ asymmetry, determining the antiquark Boer-Mulders distributions. A good agreement with the data is found in the region of low $q_T$, where the transverse-momentum factorization approach applies.

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Vincenzo Barone, Stefano Melis, Alexei Prokudin. 2010-09-17. Azimuthal asymmetries in unpolarized Drell-Yan processes and the Boer-Mulders distributions of antiquarks. https://doi.org/10.1103/physrevd.82.114025

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