Lawrence Berkeley National Laboratory Recent Work Title QCD Mechanisms for Double Quarkonium and Open Heavy Meson Hadroproduction Permalink

Content Provider	Semantic Scholar
Author	Vogt, Roland
Copyright Year	2013
Abstract	Double J I 'ljJ production on the order of 20-30 ph has been observed by the N A3 collaboration. These tj;tj; pairs, measured in 7!"·N interactions at 150 and 280 Ge VIc and in pN interactions at 400 GeV lc, carry a large fraction of the projectile momentum, x.,p.,p ~ 0.6 for the 150 Ge VIc beam and ~ 0.4 at 280 Ge VI c. We examine several sources of '1/J'I/J pair production within QCD, including O(a!) '1/Jt/J production, leading-twist bb production and decay, and the materialization of heavy-quark Fock states in the projectile. We estimate the production cross section and the single and double J 1'1/J momentum and mass distributions for each, comparing the results with the N A3 data, and predict 1/J'I/J production in pN interactions at 800 Ge VIc, accessible to current fixed-target experiments. We also discuss the observable implications of open heavy meson pair production from the intrinsic heavy quark Fock states. *This work was supported in part by the Director, Office of Energy Research, Division of Nuclear Physics of the Office of High Energy and Nuclear Physics of the U.S. Department of Energy under Contract Number DE-A~03-76SF0098.
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Language	English
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Content Type	Text
Resource Type	Article