The Leading Particle Effect from Heavy-Quark Recombination

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The leading particle effect in charm hadroproduction is an enhancement of the cross section for a charmed hadron D in the forward direction of the beam when the beam hadron has a valence parton in common with the D. The large D+/D- asymmetry observed by the E791 experiment is an example of this phenomenon. We show that the heavy-quark recombination mechanism provides an economical explanation for this effect. In particular, the D+/D- asymmetry can be fit reasonably well using a single parameter whose value is consistent with a recent determination from charm photoproduction.

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Braten, Eric; Jia, Yu & Mehen, Thomas May 1, 2002.

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The leading particle effect in charm hadroproduction is an enhancement of the cross section for a charmed hadron D in the forward direction of the beam when the beam hadron has a valence parton in common with the D. The large D+/D- asymmetry observed by the E791 experiment is an example of this phenomenon. We show that the heavy-quark recombination mechanism provides an economical explanation for this effect. In particular, the D+/D- asymmetry can be fit reasonably well using a single parameter whose value is consistent with a recent determination from charm photoproduction.

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116 Kilobytes pages

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  • Report No.: JLAB-PHY-02-17
  • Report No.: DOE/ER/40150-2090
  • Report No.: hep-ph/0205149
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 796059
  • Archival Resource Key: ark:/67531/metadc741846

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Office of Scientific & Technical Information Technical Reports

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Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 1, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • Feb. 5, 2016, 9:39 p.m.

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Braten, Eric; Jia, Yu & Mehen, Thomas. The Leading Particle Effect from Heavy-Quark Recombination, article, May 1, 2002; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc741846/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.