Large p_T Hadron Productions and String Junction Model

概要

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Taking the string model as a realization of confinement, we investigate the role of string and junction (J) in large p_T hadron production. Not only the flow of constituent q and junction J line but the motion bf string and junction is explicitly examined for (i) the fragmentation processes ((a) (initial hadron) + (constituent q or J) + (spectator) and (b) (constituent q or J)→(final hadron) + (spectator)) and (ii) the lowest subprocess. Two kinds of jet, q jet (with flavor) and J jet (without flavor), play a different role due to their different connection to strings. J jet is suggested to. play an important role in large p_T hadron production, especially anomalous behavior of proton production. The reaction π^±p→hX is investigated and the single particle distributions and jet distributions are predicted based on the analysis of pp→hX. The process π^±p→hX is suited to know the properties of the lowest subprocesses, e.g., crossing relation, because it contains all. subprocesses (D^^^, X^^^ and H^^^ type) as the leading components, while the subprocess H^^^ does not appear as the leading component in pp→hX. Beam ratio (pp→jet X) is predicted. Hadron production (especially baryon production) in lh→lhX is necessitated to reveal the origin of anomalous proton production in pp→hX.
理論物理学刊行会の論文
1978-03-25