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Proton-proton spin correlations at charm threshold and quarkonium bound to nuclei
1998
Physical Review D, Particles and fields
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The anomalous behavior of the spin-spin correlation at large momentum transfer in pp elastic scattering is described in terms of the degrees of freedom associated with the onset of the charm threshold. A non-perturbative analysis based on the symmetries of QCD is used to extract the relevant dynamics of the charmonium-proton interaction. The enhancement to pp amplitudes and their phase follow from analyticity and unitarity, giving a plausible explanation of the spin anomaly. The interaction
doi:10.1103/physrevd.58.034012
fatcat:trejlpf7wbbzhpntut6stfutiy