2020 Impact factor 4.590
Particles and Fields

Eur. Phys. J. C 24, 573-580 (2002)
DOI: 10.1007/s10052-002-0970-6

Valence quark annihilation and leading charmed meson production in $\pi^- N$ and K-N collisions

T. Tashiro1, H. Noda2, K. Kinoshita3 and S. Nakariki1

1  Department of Computer Simulation, Okayama University of Science, Okayama 700-0005, Japan
2  Department of Mathematical Science, Ibaraki University, Mito 310-0056, Japan
3  Physics Department, Kagoshima University, Kagoshima 890-0065, Japan

(Received: 18 December 2001 / Revised version: 22 March 2002 / Published online: 14 June 2002 )

We discuss the hadroproduction of charmed mesons in the framework of the constituent cascade model taking into account the valence quark annihilation. It is shown that the valence quark annihilation process dominates at large Feynman x regions and explains the recent experimental data on the asymmetry between D0 and $\bar{D}^0$ at $350 {\mathrm {\,GeV}}/c$ in $\pi^- N$ collisions.

© Società Italiana di Fisica, Springer-Verlag 2002