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$J/psi$ dissociation by pions in QCD | | Francisco O. Dur~aes
; Su Houng Lee
; Fernando S. Navarra
; Marina Nielsen
; | | Date: |
24 Oct 2002 | | Journal: | Phys.Lett. B564 (2003) 97-103 | | Subject: | nucl-th hep-ph | | Abstract: | We compute the $J/psi pi o {charmed mesons}$ cross section using QCD sum rules. This cross section is important to distinguish the suppression in the production of $J/psi$ through the dissociation by comoving pions and through the formation of quark-gluon plasma. Our sum rules for the $J/psi pi o ar{D} D^*$, $D ar{D}^*$, ${ar D}^* D^*$ and ${ar D} D$ hadronic matrix elements are constructed by using vaccum-pion correlation functions, and we work up to twist-4 in the soft-pion limit. After doing a thermal average we get $sim 0.2 - 0.4$ mb at $T=150MeV$ | | Source: | arXiv, nucl-th/0210075 | | Services: | Forum | Review | PDF | Favorites | |
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