English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We explore the electromagnetic gauge invariance of the hadron tensor of theDrell-Yan process with one transversely polarized hadron. Due to the specialrole of the contour gauge for gluon fields, the prescription for the gluonicpole in the twist 3 correlator can be related to the causality prescriptionsfor exclusive hard processes. Because of this, we find the extra contributions,which naively do not have an imaginary phase. The single spin asymmetry for theDrell-Yan process is accordingly enhanced by the factor of two.

Asymmetries associated with higher twists: gauge invariance, gluonic poles and twist three