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Intrinsic Charm Contribution To Double Quarkonium Hadroproduction
PHYSICS LETTERS B, no. 4 (1995): 569-575
摘要
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) greater...更多
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