Leading Charm in Hadron-Nucleus Interaction in the Intrinsic Charm Model

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Leading charm hadrons produced in hadron-nucleus interactions cannot be adequately described within the parton fusion model. Recent results on charm baryon production in Sigma{sup -} A interactions at 330 GeV with the WA89 detector disagree with fusion predictions. Intrinsic heavy quark pairs in the Sigma{sup -}(dds) wave function provide a simple mechanism for producing fast charm hadrons. We calculate leading charm baryon production from Sigma{sup -}, pi{sup -} and p projectiles in a two component model combining partonfusion with intrinsic charm. Final state D{sup -}, Sigma{sub c}{sup 0}, Xi{sub c}{sup +}, and Lambda{sub c}{sup +} d sigma/dx{sub F} distributions and ... continued below

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Gutierrez, T. & Vogt, R. August 3, 1998.

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Leading charm hadrons produced in hadron-nucleus interactions cannot be adequately described within the parton fusion model. Recent results on charm baryon production in Sigma{sup -} A interactions at 330 GeV with the WA89 detector disagree with fusion predictions. Intrinsic heavy quark pairs in the Sigma{sup -}(dds) wave function provide a simple mechanism for producing fast charm hadrons. We calculate leading charm baryon production from Sigma{sup -}, pi{sup -} and p projectiles in a two component model combining partonfusion with intrinsic charm. Final state D{sup -}, Sigma{sub c}{sup 0}, Xi{sub c}{sup +}, and Lambda{sub c}{sup +} d sigma/dx{sub F} distributions and D{sup -}/D{sup +}, D{sub s}{sup -}/D{sub s}{sup +} and Lambda{sub c}{sup +}/overline Lambda{sub c}{sup +} asymmetries are compared to WA89 data. Predictions are made for 650 GeV Sigma{sup -} A and pi{sup -} A interactions in the SELEX detector at Fermilab and for 800 GeV pA interactions.

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  • Journal Name: Nuclear Physics B; Journal Volume: 539; Journal Issue: 1-2; Other Information: Journal Publication Date: Jan. 25, 1999

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  • Report No.: LBNL--42004
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 799536
  • Archival Resource Key: ark:/67531/metadc737666

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  • August 3, 1998

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  • Oct. 19, 2015, 7:39 p.m.

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  • Sept. 1, 2016, 7 p.m.

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Gutierrez, T. & Vogt, R. Leading Charm in Hadron-Nucleus Interaction in the Intrinsic Charm Model, article, August 3, 1998; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc737666/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.