# Charmonium Production

Source: [Charmonium Production](<https://www.sota2.com/research/paper/68fa1f217a2b558e293274dd>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-23T17:14:57.309Z

Authors: K. Sridhar

Published: 1996-06-06T14:31:01.000Z

## Abstract

Theoretical analyses of the results on quarkonium production at large transverse momentum ($p\_T$) in $p\\bar p$ collisions, at the Tevatron have revealed two novel features of the physics of quarkonium production : 1) the contribution of fragmentation of gluons and charm quarks to the cross-section at large $p\_T$, and 2) the importance of colour octet components of the quarkonium wave-function. I discuss the theoretical developments which have contributed to a reasonably consistent picture of quarkonium production at the Tevatron, and discuss large-$p\_T$ $J/\\psi$ production at HERA and at LHC as important tests of the fragmentation picture. I also discuss our recent analysis of $J/\\psi$ production cross-sections at fixed-target energies, where we find that the energy dependence of the $p\_T$-integrated cross-sections for both $pp$ and $\\pi^- - p$ collisions is reasonably well reproduced, when the colour-octet components are included.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/hep-ph/9606252>)

[PDF](<https://arxiv.org/pdf/hep-ph/9606252.pdf>)