Publications
Publication Information
| Title | Connections between collinear and transverse-momentum-dependent polarized observables within the Collins-Soper-Sterman formalism |
| Authors | Leonard Gamberg, Andreas Metz, Daniel Pitonyak, Alexei Prokudin |
| JLAB number | JLAB-THY-18-2690 |
| LANL number | arXiv:1712.08116 |
| Other number | DOE/OR/23177-4422 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physics Letters B Volume 781 Page(s) 443-454 Refereed | |
| Publication Abstract: | We extend the improved Collins-Soper-Sterman (iCSS) $W+Y$ construction recently presented in~\cite{Collins:2016hqq} to the case of polarized observables, where we focus in particular on the Sivers effect in semi-inclusive deep-inelastic scattering. We further show how one recovers the expected leading-order collinear twist-3 result from a (weighted) $q_T$-integral of the differential cross section. We are also able to demonstrate the validity of the well-known relation between the (TMD) Sivers function and the (collinear twist-3) Qiu-Sterman function within the iCSS framework. This relation allows for their interpretation as functions yielding the average transverse momentum of unpolarized quarks in a transversely polarized spin-$\frac{1}{2}$ target. We further outline how this study can be generalized to other polarized quantities. |
| Experiment Numbers: | |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1016/j.physletb.2018.03.024 |
| Accepted Manuscript: | 1-s2.0-S0370269318302132-main.pdf Open Access published version |
| Supporting Documents: | |
| Supporting Datasets: | |