Heavy quarkonium production in hadronic collisions in TMD framework

TL;DR

This paper revisits heavy quarkonium production at low transverse momentum in high-energy hadronic collisions using the TMD framework, employing CSS resummation to improve data description.

Contribution

It applies the CSS formalism to heavy quarkonium production, providing a better theoretical description of experimental data at Tevatron and LHC.

Findings

CSS formalism effectively describes $mbda$ production data

Resummation of soft gluon effects improves theoretical predictions

Good agreement with experimental measurements at Tevatron and LHC

Abstract

Heavy quarkonium ($\Upsilon$) production at low transverse momentum ($P_\perp$) in high-energy hadronic collisions is revisited from the point of view of transverse momentum dependent (TMD) framework. We perform resummation of double logarithmic correction associated with initial-state soft gluon shower for $b\bar b$ production by employing Collins-Soper-Sterman (CSS) formalism. We show that the CSS formalism provides a nice description of $\Upsilon$ production data in p+$\rm\bar{p}$ collisions at Tevatron and p+p collisions at the LHC.