Intrinsic Charm Contribution to Double Quarkonium Hadroproduction

Abstract

Double $J/\psi$ production has been observed by the NA3 collaboration in $\pi N$ and $pN$ collisions with a cross section of the order of 20-30 pb. The $\psi \psi$ pairs measured in ${\pi }^{-}$ nucleus interactions at 150 and 280 GeV$/c$ are observed to carry an anomalously large fraction of the projectile momentum in the laboratory frame, $x_{\psi \psi }\ge 0.6$ at 150 GeV$/c$ and $\ge 0.4$ at 280 GeV$/c$. We postulate that these forward $\psi \psi$ pairs are created by the materialization of Fock states in the projectile containing two pairs of intrinsic $c\overline{c}$ quarks. We calculate the overlap of the charmonium states with the $|\overline{u}dc\overline{c}c\overline{c}⟩$ Fock state as described by the intrinsic charm model and find that the ${\pi }^{-}N\to \psi \psi$ longitudinal momentum and invariant mass distributions are both well reproduced. We also discuss double $J/\psi$ production in $pN$ interactions and the implications for other heavy quarkonium production channels in QCD.

arXiv commentRevtex, APS style, 7 pages, 3 figures in uuencoded file

References in corpus (1)

• A QCD Calculation of the Interaction of Quarkonium with Nuclei

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