A study on three gluon correlator of Sivers asymmetry in SIDIS

Ling Yun Dai, Zhong Bo Kang, Alexei Prokudin, Ivan Vitev

Research output: Contribution to journalConference articlepeer-review


We study the three-gluon correlation function contribution to the Sivers asymmetry in semiinclusive deep inelastic scattering. We first establish the matching between the usual twist-3 collinear factorization approach and transverse momentum dependent factorization formalism for the moderate transverse momentum region. We then derive the so-called coefficient functions used in the usual TMD evolution formalism. Finally we perform the next-to-leading order calculation for the transverse-momentum-weighted spin-dependent differential cross section, from which we identify the QCD collinear evolution of the twist-3 Qiu-Sterman function: the offdiagonal contribution from the three-gluon correlation functions.

Original languageEnglish (US)
Article number246
JournalProceedings of Science
StatePublished - 2015
Event23rd International Workshop on Deep-Inelastic Scattering, DIS 2015 - Dallas, United States
Duration: Apr 27 2015May 1 2015

All Science Journal Classification (ASJC) codes

  • General


Dive into the research topics of 'A study on three gluon correlator of Sivers asymmetry in SIDIS'. Together they form a unique fingerprint.

Cite this