Elliptic Flow in Small Systems due to Elliptic Gluon Distributions?

Yoshikazu Hagiwara; Yoshitaka Hatta; Bo-Wen Xiao; Feng Yuan

doi:10.1016/j.physletb.2017.05.083

Elliptic Flow in Small Systems due to Elliptic Gluon Distributions?

High Energy Physics - Phenomenology 2017-06-14 v3

Authors: Yoshikazu Hagiwara , Yoshitaka Hatta , Bo-Wen Xiao , Feng Yuan

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Abstract

We investigate the contributions from the so-called elliptic gluon Wigner distributions to the rapidity and azimuthal correlations of particles produced in high energy $pA$ collisions by applying the double parton scattering mechanism. We compute the `elliptic flow' parameter $v_2$ as a function of the transverse momentum and rapidity, and find qualitative agreement with experimental observations. This shall encourage further developments with more rigorous studies of the elliptic gluon distributions and their applications in hard scattering processes in $pp$ and $pA$ collisions.

Keywords

elliptic flow gluon physics heavy-ion collisions

Cite

@article{arxiv.1701.04254,
  title  = {Elliptic Flow in Small Systems due to Elliptic Gluon Distributions?},
  author = {Yoshikazu Hagiwara and Yoshitaka Hatta and Bo-Wen Xiao and Feng Yuan},
  journal= {arXiv preprint arXiv:1701.04254},
  year   = {2017}
}

Comments

8 pages, 8 figures; v2 discussion in the numerical section modified, results unchanged, to appear in Phys. Lett. B; v3 one reference added

Elliptic Flow in Small Systems due to Elliptic Gluon Distributions?

Abstract

Keywords

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