QCD Evolution of the Sivers Asymmetry
By M. G. Echevarria, Ahmad Idilbi, Zhong-Bo Kang, I. Vitev. 2014
138 citations recorded by the source corpus.
We study the QCD evolution of the Sivers effect in both semi-inclusive deep inelastic scattering (SIDIS) and Drell-Yan production (DY). We pay close attention to the nonperturbative spin-independent Sudakov factor in the evolution formalism and find a universal form which can describe reasonably well the experimental data on the transverse momentum distributions in SIDIS, DY lepton pair and W/Z production. With this Sudakov factor at hand, we perform a global fitting of all the experimental data on the Sivers asymmetry in SIDIS from HERMES, COMPASS and Jefferson Lab. We then make predictions for the Sivers asymmetry in DY lepton pair and W production that can be compared to the future experimental measurements to test the sign change of the Sivers functions between SIDIS and DY processes and constrain the sea quark Sivers functions. © 2014 American Physical Society.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e856ef6638f69934e1a29b50743e059db956e1ff
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Citations in the corpus
- Parton distributions and lattice-QCD calculations: Toward 3D structure (2020, background): “In these cases, the description of the TMD evolution formula (56) was continuously improved, moving from the NLL level (Bacchetta et al., 2017; Echevarria et al., 2014; Sun et al., 2018) through the NNLL one (Bertone et al., 2019; D’Alesio et al., 2014; Scimemi and Vladimirov, 2018), up to the…”