Leading Effects in Hadroproductions of Lambda_c and D From Constituent Quark-Diquark Cascade Picture

We discuss the hadroproductions of Lambda_c, Lambda_c bar, D and D bar in the framework of the constituent quark-diquark cascade model taking into account the valence quark annihilation. The spectra of Lambda_c and Lambda_c bar in pA, Sigma^-A and pi^-A collisions are well explained by the model using the values of parameters used in hadroproductions of D and D bar. It is shown that the role of valence diquark in the incident baryon is important for D bar productions as well as for Lambda_c production.Comment: 11 pages, 5 figures, v2:some explanations added, references added, typos corrected, v3: top margin change

コウセイシ カスケード モデル ニヨル KP オヨビ πP ショウトツ ニオケル チャーム ハドロン ノ セイセイ

We investigate the meson, baryon and anti-baryon productions in Kp and πp collisions in terms of the constituent cascade model which includes charm flavour. We compare our predicted spectra of charmed hadrons with the experimental data. Our model sugests the different leading particle effects on D mesons between π^+ and π^- beams