A Simple Treatment of Hadron Fragmentation Processes in Hadron-Hadron Collisions : Meson Case

概要

論文の詳細を見る
A simple treatment of hadron fragmentation processes in hadron-hadron collisions at high energies is formulated in the framework of (i) the quark model of hadron, (ii) cascade mechanism of hadron production and (iii) subsequent decay of unstable hadrons into stable particles. The model is applied to meson case. Pseudoscalar, vector and tensor mesons are considered in primary interaction. The data of π^+ fragmentation in π^+p collision at P_L=16 GeV/c are systematically analyzed. It is shown that about 55~60% and 10~15% of produced pions are decay products of produced vector and tensor mesons, respectively. The direct π-production is about 15%. Also the contributions of tensor mesons and direct ρ-production to inclusive ρ spectrum are about 25~30% and 70~75%, respectively. It is found that the quark fragmentation function in fadron-hadron interactions at small Pr is very different from the one obtained in lepton-hadron interactions and hadron reactions at large Pr.
理論物理学刊行会の論文
1979-01-25