Asymmetries between the production of D+ and D- mesons from 500 GeV/ cπ--nucleus interactions as a function of xF and pt2
Abstract
We present asymmetries between the production of D+ and D- mesons in Fermilab experiment E791 as a function of xF and pt2. The data used here consist of 74000 fully-reconstructed charmed mesons produced by a 500 GeV/ cπ- beam on C and Pt foils. The measurements are compared to results of models which predict differences between the production of heavy-quark mesons that have a light quark in common with the beam (leading particles) and those that do not (non-leading particles). While the default models do not agree with our data, we can reach agreement with one of them, PYTHIA, by making a limited number of changes to parameters used.
- Publication:
-
Physics Letters B
- Pub Date:
- March 1996
- DOI:
- 10.1016/0370-2693(96)00093-7
- arXiv:
- arXiv:hep-ex/9601001
- Bibcode:
- 1996PhLB..371..157A
- Keywords:
-
- High Energy Physics - Experiment
- E-Print:
- Phys.Lett. B371 (1996) 157-162