Publications
Publication Information
| Title | Azimuthal asymmetries in unpolarized SIDIS and Drell-Yan processes: a case study towards TMD factorization at subleading twist |
| Authors | Alexei Prokudin, Alessandro Bacchetta, Marco Radici, M. Echevarria, C. Pisano, Giuseppe Bozzi |
| JLAB number | JLAB-THY-19-2963 |
| LANL number | arXiv:1906.07037 |
| Other number | DOE/OR/23177-4710 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | NSF ERC |
|
Journal Compiled for Physics Letters B Volume 797 Page(s) 134850 Refereed | |
| Publication Abstract: | We consider the azimuthal distribution of the final observed hadron in semi-inclusive deep-inelastic scattering and the lepton pair in the Drell-Yan process. In particular, we focus on the $\cos \phi$ modulation of the unpolarized cross section and on its dependence upon transverse momentum. At low transverse momentum, for these observables we propose a factorized expression based on tree-level approach and conjecture that the same formula is valid in transverse-momentum dependent (TMD) factorization when written in terms of subtracted TMD parton distributions. Our formula correctly matches with the collinear factorization results at high transverse momentum, solves a long-standing problem and is a necessary step towards the extension of the TMD factorization theorems up to the subleading twist. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1016/j.physletb.2019.134850 |
| Accepted Manuscript: | 1-s2.0-S0370269319305647-main.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |