Proton-Proton Spin Correlations at Charm Threshold and Quarkonium Bound to Nuclei

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  • 1 August 1997
Abstract
A model independent non-perturbative analysis of quarkonium-proton interactions based on low-energy QCD theorems is carried out to describe the anomalous behavior of the spin-spin correlation asymmetry observed at large momentum transfer in pp elastic scattering at the charm threshold. The enhancement to pp elastic amplitudes and their phase is determined by analyticity and unitarity giving a plausible explanation of the spin anomaly. We also reexamine the possibility that the interaction between charmonium and light quarks in nuclei may form a distinct kind of nuclear matter, nuclear bound quarkonium.

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