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arXiv · 2012.05135

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

Marcin Bury·Alexei Prokudin·Alexey Vladimirov
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Abstract

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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Marcin Bury, Alexei Prokudin, Alexey Vladimirov. 2020-12-09. N$^3$LO extraction of the Sivers function from SIDIS, Drell-Yan, and $W^\pm/Z$ data. https://doi.org/10.1103/physrevlett.126.112002

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