1. Asymmetries between the production of D+ and D- mesons from 500 GeV/c pi- nucleon interactions as a function of xF and pt**2
- Author
-
Aitala, E. M., Amato, S., Anjos, J. C., Appel, J. A., Aryal, M., Ashery, D., Astorga, J., Banerjee, S., Bediaga, I., Blaylock, G., Bracker, S. B., Burchat, P. R., Burnstein, R. A., Carter, T., Carvalho, H. S., Costa, I., Cremaldi, L. M., Darling, C., Denisenko, K., Fernandez, A., Gagnon, P., Gerzon, S., Gobel, C., Gounder, K., Granite, D., Halling, A. M., Herrera, G., Hurvits, G., James, C., Kasper, P. A., Kondakis, N., Kwan, S., Langs, D. C., Leslie, J., Lichtenstadt, J., Lundberg, B., Manacero, A., MayTal-Beck, S., Meadows, B., Neto, J. R. T. de Mello, Milburn, R. H., de Miranda, J. M., Napier, A., Nguyen, A., d'Oliveira, A. B., O'Shaughnessy, K., Peng, K. C., Perera, L. P., Purohit, M. V., Quinn, B., Radeztsky, S., Rafatian, A., Reay, N. W., Reidy, J. J., Reis, A. C., Rubin, H. A., Santha, A. K. S., Santoro, A. F. S., Schwartz, A. J., Sheaff, M., Sidwell, R. A., Slaughter, A. J., Smith, J. G., Sokoloff, M. D., Stanton, N. R., Sugano, K., Summers, D. J., Takach, S., Thorne, K., Tripathi, A. K., Watanabe, S., Weiss-Babai, R., Wiener, J., Witchey, N., Wolin, E., Yi, D., Zaliznyak, R., and Zhang, C.
- Subjects
High Energy Physics - Experiment - Abstract
We present asymmetries between the production of D+ and D- mesons in Fermilab experiment E791 as a function of xF and pt**2. The data used here consist of 74,000 fully-reconstructed charmed mesons produced by a 500 GeV/c pi- 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.
- Published
- 1996
- Full Text
- View/download PDF