Phenomenological Approach to Multiple Particle Production

TL;DR

This paper presents a phenomenological model for particle production in high-energy collisions, emphasizing isotropic emission from multiple centers and predicting suppressed forward-region particle production, with parameters fitted to experimental data.

Contribution

It introduces a new rapidity density distribution model with five adjustable parameters, differing from existing models by strongly suppressing forward-region particle production.

Findings

Model fits experimental (pseudo-)rapidity and transverse momentum data.

Predicts suppressed particle production in the forward region.

Discusses implications for high-energy collisions like at LHC.

Abstract

We formulate empirically the rapidity density distribution of produced particles in multiple particle production. The assumed mechanism is that the produced particles are emitted isotropically from several emitting centers, located on the rapidity axis. The formula includes five adjustable parameters, which are to be determined by the experimental data of (pseudo-)rapidity density distributions and transverse momentum distributions at various energies. It is a distinguished difference of the present rapidity density distribution from those of other models that the particle production is suppressed strongly in the forward region. We discuss multiplicity and inelasticity at high energies, the pseudo-rapidity density distribution at LHC energy and some speculations, based on the present formulation.