### Abstract

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 J/ψ-gluon cross Section gets a large relativistic correction at higher energies, the correction becomes small in the J/ψ-hadron Cross section due to the increase of the gluon distribution at smaller x inside the hadron.

Original language | English |
---|---|

Article number | 067901 |

Pages (from-to) | 679011-679014 |

Number of pages | 4 |

Journal | Physical Review C - Nuclear Physics |

Volume | 65 |

Issue number | 6 |

Publication status | Published - 2002 Jan 1 |

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### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

### Cite this

*Physical Review C - Nuclear Physics*,

*65*(6), 679011-679014. [067901].

}

*Physical Review C - Nuclear Physics*, vol. 65, no. 6, 067901, pp. 679011-679014.

**Quarkonium-hadron interactions in QCD.** / Oh, Yongseok; Kim, Sungsik; Lee, Su Houng.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Quarkonium-hadron interactions in QCD

AU - Oh, Yongseok

AU - Kim, Sungsik

AU - Lee, Su Houng

PY - 2002/1/1

Y1 - 2002/1/1

N2 - 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 J/ψ-gluon cross Section gets a large relativistic correction at higher energies, the correction becomes small in the J/ψ-hadron Cross section due to the increase of the gluon distribution at smaller x inside the hadron.

AB - 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 J/ψ-gluon cross Section gets a large relativistic correction at higher energies, the correction becomes small in the J/ψ-hadron Cross section due to the increase of the gluon distribution at smaller x inside the hadron.

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UR - http://www.scopus.com/inward/citedby.url?scp=4243714209&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:4243714209

VL - 65

SP - 679011

EP - 679014

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 6

M1 - 067901

ER -