The European Physical Journal C

ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)

Table of Contents

Abstract Volume 2 Issue 4 (1998) pp 733-740
DOI 10.1007/s100529800724

theoretical physics:
Charmed hadron production in $\pi p$ and $Kp$ collisions and leading particle effect by constituent quark-diquark cascade model

Tsutomu Tashiro (1), Hujio Noda (2), Shin-ichi Nakariki (3), Kazuo Ishii (3), Kisei Kinoshita (4)

(1) Department of Mechanical Engineering, Faculty of Engineering, Okayama University of Science, Okayama 700, Japan (e-mail: tashiro@sp.ous.ac.jp, Fax: +81 86 255 3611)
(2) Department of Mathematical Science, Faculty of Science, Ibaraki University, Mito 310, Japan (e-mail: noda@mito.ipc.ibaraki.ac.jp, Fax: +81 292 28 8407)
(3) Department of Applied Physics, Faculty of Science, Okayama University of Science, Okayama 700, Japan (e-mail: nakariki@sp.ous.ac.jp, ishi@sp.ous.ac.jp, Fax: +81 86 255 7700)
(4) Physics Department, Faculty of Education, Kagoshima University, Kagoshima 890, Japan (e-mail: kisei@rikei.edu.kagoshima-u.ac.jp, Fax: +81 99 285 7735)

Received: 5 November 1996 / Revised version: 30 June 1997 / Published online: 20 February 1998

Abstract. We investigate the meson, baryon and anti-baryon productions in $\pi p$ and $Kp$ collisions in terms of a constituent cascade model which includes charm flavour. The constituent diquark in an incident baryon has a tendency to get a large momentum fraction, resulting in considerable difference of subenergies for particle productions from quark-diquark and quark-antiquark chains in a meson-baryon collision. As a consequence, the leading particle effects on $D$ meson productions are expected to be quite different in $\pi^+$ and $\pi^-$ beams at present accelerator energies.

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Online publication: May 25, 1998
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