4.7 Article

Gluon TMDs and NRQCD matrix elements in J/ψproduction at an EIC

Journal

EUROPEAN PHYSICAL JOURNAL C
Volume 80, Issue 1, Pages -

Publisher

SPRINGER
DOI: 10.1140/epjc/s10052-020-7620-8

Keywords

-

Funding

  1. European Union's Horizon 2020 research and innovation programme [647981]

Ask authors/readers for more resources

In this paper we analyze azimuthal asymmetries in the processes of unpolarized and polarized J/psi(& x3a5;)production at an Electron-Ion Collider. Apart from giving access to various unknown gluon transverse momentum distributions, we suggest to use them as a new method to extract specific color-octet NRQCD long-distance matrix elements, i.e. ⟨0|O8J/psi(1S0), whose values are still quite uncertain and for which lattice calculations are unavailable. The new method is based on combining measurements of analogous asymmetries in open heavy-quark pair production which can be performed at the same energy. We also study for the first time the effects of transverse-momentum smearing in the quarkonium formation process. To enhance the gluon contribution one can consider smaller values of x and, in order to assess the impact of small-x evolution, we perform a numerical study using the MV model as a starting input and evolve it with the JIMWLK equations.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available