Quarkonium-hadron interactions in QCD

Yongseok Oh, Sungsik Kim, Su Houng Lee

Research output: Contribution to journalArticlepeer-review


The leading order nonrelativistic QCD result for the quarkonium-hadron interaction cross section is derived by using the QCD factorization formula combined with the Bethe-Salpeter amplitude for the heavy quark bound state. Our result shows the equivalence of this approach with the operator product expansion even for the bound state scattering to leading order in QCD. We also apply the formula to the charmonium system and investigate the relativistic correction coming from the phase space of the reaction. We find that although [Formula Presented]-gluon cross section gets a large relativistic correction at higher energies, the correction becomes small in the [Formula Presented]-hadron cross section due to the increase of the gluon distribution at smaller x inside the hadron.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number6
Publication statusPublished - 2002

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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