English

Azimuthal Angular Asymmetry of Soft Gluon Radiation in Jet Production

High Energy Physics - Phenomenology 2022-05-12 v2

Abstract

We investigate the impact of soft gluon resummation on the azimuthal angle correlation between the total and relative momenta of two energetic final state particles (jets). We show that the initial and final state radiations induce sizable cos(ϕ)\cos(\phi) and cos(2ϕ)\cos (2\phi) asymmetries in single jet and dijet events, respectively. We numerically evaluate the magnitude of these asymmetries for a number of processes in collider experiments, including diffractive dijet and dilepton production in ultraperipheral pApA and AAAA collisions, inclusive and diffractive dijet production at the EIC and inclusive dijet production in pppp collisions at the LHC. In particular, the cos(2ϕ)\cos (2\phi) asymmetry of perturbative origin can dominate over the primordial asymmetry due to the linearly polarized gluon distribution.

Keywords

Cite

@article{arxiv.2106.05307,
  title  = {Azimuthal Angular Asymmetry of Soft Gluon Radiation in Jet Production},
  author = {Yoshitaka Hatta and Bo-Wen Xiao and Feng Yuan and Jian Zhou},
  journal= {arXiv preprint arXiv:2106.05307},
  year   = {2022}
}

Comments

23 pages, 13 figures; a comment on the numeric results in Figs.4-6 has been added