2020 Impact factor 3.043
Hadrons and Nuclei
Eur. Phys. J. A 16, 575-581 (2003)
DOI: 10.1140/epja/i2002-10123-8

Threshold open charm production in nucleon-nucleon collisions

M.P. Rekalo1 and E. Tomasi-Gustafsson2

1  Middle East Technical University, Physics Department, Ankara 06531, Turkey
2  DAPNIA/SPhN, CEA/Saclay, 91191 Gif-sur-Yvette Cedex, France


(Received: 18 October 2002 / Revised version: 21 November 2002 / Published online: 18 March 2003)

The associative charm particles production in nucleon-nucleon collisions $N+N\to \Lambda_c(\Sigma_c)+\overline{D}+N$, is described in a general way and the spin and isospin structure of the corresponding matrix elements are derived. Using an analogy with strange-particle ( $\Lambda K$) production, the D-meson exchange model is considered in detail. Estimations of the energy behavior of the threshold cross-sections show a large dependence on the form of the phenomenological hadron form factors and indicate that, at threshold, the cross-section is three orders of magnitude smaller than for strange-particle production.

13.85.-t - Hadron-induced high- and super-high-energy interactions (energy > 10 GeV).
14.20.Lq - Charmed baryons.
14.40.Lb - Charmed mesons.

© Società Italiana di Fisica, Springer-Verlag 2003