skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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.

Authors:
;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science. Office of High Energy and Nuclear Physics. Division of Nuclear Physics (US)
OSTI Identifier:
799536
Report Number(s):
LBNL-42004
R&D Project: NTCOST; B& R KB0301020; TRN: US0203046
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Nuclear Physics B
Additional Journal Information:
Journal Volume: 539; Journal Issue: 1-2; Other Information: Journal Publication Date: Jan. 25, 1999; PBD: 3 Aug 1998
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BARYONS; FERMILAB; HADRONS; PARTONS; PRODUCTION; PROJECTILES; QUARKS; WAVE FUNCTIONS; HEAVY QUARKS LEADING PARTICLE EFFECTS

Citation Formats

Gutierrez, T, and Vogt, R. Leading Charm in Hadron-Nucleus Interaction in the Intrinsic Charm Model. United States: N. p., 1998. Web.
Gutierrez, T, & Vogt, R. Leading Charm in Hadron-Nucleus Interaction in the Intrinsic Charm Model. United States.
Gutierrez, T, and Vogt, R. 1998. "Leading Charm in Hadron-Nucleus Interaction in the Intrinsic Charm Model". United States. https://www.osti.gov/servlets/purl/799536.
@article{osti_799536,
title = {Leading Charm in Hadron-Nucleus Interaction in the Intrinsic Charm Model},
author = {Gutierrez, T and Vogt, R},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/799536}, journal = {Nuclear Physics B},
number = 1-2,
volume = 539,
place = {United States},
year = {Mon Aug 03 00:00:00 EDT 1998},
month = {Mon Aug 03 00:00:00 EDT 1998}
}