1. Nuclear dependence of charm production.
- Author
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Blanco-Covarrubias, A., Engelfried, J., Akgun, U., Alkhazov, G., Amaro-Reyes, J., Atamantchouk, A., Ayan, A., Balatz, M., Bondar, N., Cooper, P., Dauwe, L., Davidenko, G., Dersch, U., Dolgolenko, A., Dzyubenko, G., Edelstein, R., Emediato, L., Endler, A., Eschrich, I., and Escobar, C.
- Subjects
HADRONS ,BARYONS ,MOMENTUM (Mechanics) ,MESONS ,PION beams - Abstract
Using data taken by SELEX during the 1996–1997 fixed target run at Fermilab, we study the production of charmed hadrons on copper and carbon targets with Σ
− , p, π− , and π+ beams. Parametrizing the dependence of the inclusive production cross section on the atomic number A as Aα , we determine α for D+ , D0 , D, D+ (2010), Λ, and their respective anti-particles, as a function of their transverse momentum pt and scaled longitudinal momentum xF . Within our statistics there is no dependence of α on xF for any charm species for the interval 0.1< xF <1.0. The average value of α for charm production by pion beams is αmeson =0.850±0.028. This is somewhat larger than the corresponding average αbaryon =0.755±0.016 for charm production by baryon beams ( Σ− , p). [ABSTRACT FROM AUTHOR]- Published
- 2009
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