N$^3$LO extraction of the Sivers function from SIDIS, Drell-Yan, and $W^\pm/Z$ data

Alexei Prokudin; Alexey Vladimirov; Marcin Bury

arxiv: 2012.05135 · v1 · pith:KECN6BIQnew · submitted 2020-12-09 · ✦ hep-ph · hep-ex· nucl-th

N³LO extraction of the Sivers function from SIDIS, Drell-Yan, and W^pm/Z data

Marcin Bury , Alexei Prokudin , Alexey Vladimirov This is my paper

classification ✦ hep-ph hep-exnucl-th

keywords functionsiverssidisdatadrell-yanpolarizedaccuracyanalysis

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We perform the global analysis of polarized Semi-Inclusive Deep Inelastic Scattering (SIDIS), pion-induced polarized Drell-Yan (DY), and $W^\pm/Z$ boson production data and extract the Sivers function for $u$, $d$, $s$ and for sea-quarks. We use the framework of transverse momentum dependent factorization at N$^3$LO accuracy. The Qiu-Sterman function is determined in a model-independent way from the extracted Sivers function. We also evaluate the significance of the predicted sign change of Sivers function in DY with respect to SIDIS.

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