[SLAC] [SLAC Pubs and Reports]

SLAC-PUB-7553
Is J/Psi nucleon scattering dominated by the gluonic van der Waals Interaction?

Abstract

The gluon-exchange contribution to $J/\psi$-nucleon scattering is shown to yield a sizeable scattering length of about -0.25 fm, which is consistent with the sparse available data. Hadronic corrections to gluon exchange which are generated by $\rho\pi$ and $D\bar D$ intermediate states of the $J/\psi$ are shown to be negligible. We also propose a new method to study $J/\psi$-nucleon elastic scattering in the reaction $\pi^+ d\to J/\psi\; p\; p$.

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