A study on three gluon correlator of Sivers asymmetry in SIDIS

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

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Abstract

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
Volume27-April-2015
StatePublished - Jan 1 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

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    Dai, L. Y., Kang, Z. B., Prokudin, A., & Vitev, I. (2015). A study on three gluon correlator of Sivers asymmetry in SIDIS. Proceedings of Science, 27-April-2015, [246].