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Publication Information
Title Azimuthal asymmetries in unpolarized SIDIS and Drell-Yan processes: a case study towards TMD factorization at subleading twist
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.
Author(s) Alexei Prokudin , Alessandro Bacchetta , Marco Radici , M. Echevarria, C. Pisano, Giuseppe Bozzi
Publication Date October 2019
Document Type Journal Article
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Theory & Comp Physics / THEORY CENTER / THEORY CENTER
Funding Source Nuclear Physics (NP), NSF, ERC
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-THY-19-2963 OSTI Number: 1564256
LANL Number: arXiv:1906.07037 Other Number: DOE/OR/23177-4710
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Journal Article
Journal Name Physics Letters B
Refereed Yes
Volume 797
Issue
Page(s) 134850
Attachments/Datasets/DOI Link
Document(s)
cosphi_final.pdf (STI Document)
1-s2.0-S0370269319305647-main.pdf (Accepted Manuscript)
DOI Link
Dataset(s) (none)
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