Leading charm in hadron-nucleus interactions in the intrinsic charm model

Author Info

Thomas D. Gutierrez, University of California - Davis
R. Vogt, Lawrence Berkeley National Laboratry, Berkeley, CA

Recommended Citation

Postprint version. Published in Nuclear Physics B, Volume 539, Issue 1-2, January 1, 1999, pages 189-214.

NOTE: At the time of publication, the author Thomas Gutierrez was not yet affiliated with Cal Poly.

The definitive version is available at https://doi.org/10.1016/S0550-3213(98)00748-2.

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 ∑-A interactions at 330 GeV with the WA89 detector disagree with fusion predictions. Intrinsic heavy quark pairs in the ∑- (dds) wavefunction provide a simple mechanism for producing fast charm hadrons. We calculate leading charm baryon production from ∑-, ∏- and p projectiles in a two component model combining parton fusion with intrinsic charm. Final state D-, ∑n_cn⁰, ≡n_cn⁺, and ∧n_cn⁺ dσ/dxn_F distributions and D-/D +, DT/D + and A+~/-A+~ asymmetries are compared to WA89 data. Predictions are made for 650 GeV ∑-A and ∏-A interactions in the SELEX detector at Fermilab and for 800 GeV pA interactions.

Disciplines

Physics

Copyright

1999 Elsevier.