Soft Gluon Resummation in Double Heavy Quarkonium Production at LHC

TL;DR

This paper investigates the impact of soft gluon resummation on double heavy quarkonium production at the LHC, demonstrating improved agreement with experimental data and providing insights into gluon dynamics in hadrons.

Contribution

It applies transverse momentum dependent factorization to resum large logarithms at NLL accuracy, enhancing theoretical predictions for quarkonium pair production.

Findings

Resummation improves the match with LHC data.

Distribution shapes align well with experimental results.

Highlights gluon fusion as a key production channel.

Abstract

In this paper, the soft gluon resummation effect in double heavy quarkonium production at the LHC is studied. By applying the transverse momentum dependent factorization formalism, the large logarithms introduced by the small total transverse momentum of heavy quarkonium pair final state system, are resummed to all orders in the expansion of the strong interaction coupling at the Next-to-Leading Logarithm accuracy. We also compare our result with the LHC data. We find that the distribution shape predicted by resummation calculation is consistent with experimental data very well. Since this process is mainly initiated by gluon fusion, it supplies us an important channel to study the gluon parton property in hadrons.