Published February 7, 1994 | Version v1
Journal article

Enhanced leading production of D± and D*± in 250 GeV π±-nucleon interactions

  • 1. Yale University, New Haven, Connecticut 06511 (United States)
  • 2. University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)
  • 3. Tufts University, Medford, Massachusetts 02155 (United States)
  • 4. University of Toronto, Toronto, Ontario, M5S 1A7 (Canada)
  • 5. University of Mississippi, Oxford, Mississippi 38677 (United States)
  • 6. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
  • 7. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro (Brazil)

Description

A leading charm meson is one with longitudinal momentum fraction, xF>0, whose light quark (or antiquark) is of the same type as one of the quarks in the beam particles. We report on the production asymmetry, A=[σ(leading-σ(nonleading)]/[σ(leading)+σ(nonleading)] as a function of xF. The data consist of 1500 fully reconstructed D± and D*± decays in Fermilab experiment E 769. We find a significant asymmetry for the production of charm quarks is not expected in perturbative quantum chromodynamics

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
72
Journal Issue
6
Journal Page Range
p. 812-815.
ISSN
0031-9007
CODEN
PRLTAO

Optional Information