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Quarkonium Interactions in Hadronic Matter
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abstract
The cross section for the \J~and \U~interaction with light hadrons is calculated in short-distance QCD, based on the large heavy quark mass and the resulting large energy gap to open charm or beauty. The low energy form of the cross section is determined by the gluon structure functions at large $ x$; hence it remains very small until quite high energies. This behaviour is experimentally confirmed by charm photoproduction data. It is shown to exclude \J~absorption in confined hadronic matter of the size or density attainable in nuclear collisions; in contrast, the harder gluon spectrum in deconfined matter allows break-up interactions.
Forward citations
Cited by 2 Pith papers
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The chromoelectric adjoint correlators in Euclidean space at next-to-leading order
The chromoelectric adjoint correlators are evaluated at next-to-leading order, revealing a Wilson-line zero-mode induced asymmetry that matches lattice data at extremely high temperatures.
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Near-Threshold OPE Constraints and High-Energy Diffractive Dynamics in J/psi Photoproduction
Near-threshold J/psi photoproduction data are compatible with the OPE energy dependence, but cannot distinguish target-mass-corrected from uncorrected predictions or locate the transition to high-energy diffraction.
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