Collins-type Energy-Energy Correlators and Nucleon Structure
Abstract
We generalize the conventional Energy-Energy Correlator (EEC) to include the azimuthal angle dependence, so to define azimuthal angle dependent EEC observables. We study this new EEC observable in and semi-inclusive deep inelastic scattering (SIDIS). In the back-to-back region, we find that the azimuthal angle dependent EEC is sensitive to both the unpolarized EEC jet function and a Collins-type EEC jet function. While the unpolarized EEC jet function is related to the unpolarized transverse momentum dependent (TMD) fragmentation function, the Collins-type EEC jet function is connected with the Collins fragmentation function. We further demonstrate how the new observables allow us to access to the 3D structure of nucleons, especially the spin-dependent ones.
Keywords
Cite
@article{arxiv.2307.06935,
title = {Collins-type Energy-Energy Correlators and Nucleon Structure},
author = {Zhong-Bo Kang and Kyle Lee and Ding Yu Shao and Fanyi Zhao},
journal= {arXiv preprint arXiv:2307.06935},
year = {2023}
}
Comments
Presented at DIS2023: XXX International Workshop on Deep-Inelastic Scattering and Related Subjects, Michigan State University, USA, 27-31 March 2023