J/ψ dissociation by pions in QCD

Francisco O. Durães, Su Houng Lee, Fernando S. Navarra, Marina Nielsen

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

We compute the J/ψ → charmed mesons cross section using QCD sum rules. This cross section is important to distinguish the suppression in the production of J/ψ through the dissociation by comoving pions and through the formation of quarkgluon plasma. Our sum rules for the J/ψ π → D̄ D*, D D̄*, D̄* D* and D̄ D hadronic matrix elements are constructed by using vacuum-pion correlation functions, and we work up to twist-4. After doing a thermal average we get (σπJ/ψ v) ∼ 0.2-0.4 mb at T = 150 MeV.

Original languageEnglish
Pages (from-to)97-103
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume564
Issue number1-2
DOIs
Publication statusPublished - 2003 Jun 3

Bibliographical note

Funding Information:
We are grateful to J. Hüfner and H. Kim for fruitful discussions. M.N. would like to thank the hospitality and financial support from the Yonsei University during her stay in Korea. This work was supported by CNPq and FAPESP-Brazil.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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