Systematics of Leading Particle Production

Details Systematics of Leading Particle Production Systematics of Leading Particle Production

1998-09-09

arxiv.org/abs/hep-ph/9809309v1

Phys.Rev. D58 (1998) 094034

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, Latex, 4 ps figures. To appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.58.094034

Using a QCD inspired model developed by our group for particle production, the Interacting Gluon Model (IGM), we have made a systematic analysis of all available data on leading particle spectra. These data include diffractive collisions and photoproduction at HERA. With a small number of parameters (essentially only the non-perturbative gluon-gluon cross section and the fraction of diffractive events) good agreement with data is found. We show that the difference between pion and proton leading spectra is due to their different gluon distributions. We predict a universality in the diffractive leading particle spectra in the large momentum region, which turns out to be independent of the incident energy and of the projectile type.

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