Soft-Gluon Resummation in Heavy Quarkonium Physics

TL;DR

This paper investigates soft-gluon resummation effects in heavy quarkonium production, showing significant cross section increases and improved scale dependence compared to NLO predictions.

Contribution

It introduces a detailed analysis of soft-gluon resummation in heavy quarkonium hadroproduction, highlighting its impact on cross section predictions and scale dependence.

Findings

Cross sections increase significantly over NLO predictions.

Improved dependence on factorization and renormalization scales.

Enhanced theoretical predictions for heavy quarkonium production.

Abstract

Soft-gluon resummation within the framework of heavy quarkonium hadroproduction is considered. A few selected cases are studied in detail. A sizeable increase of the cross sections with respect to the next-to-leading order predictions with central factorization/renormalization scale choice can generally be observed. Improvements in the dependence of the cross sections on the two scales, especially when they are kept equal, are also found.