2016/01/22 by R. Lacey, Roy A. Lacey, Peifeng Liu +16
Mathematics · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Statistical Methods and Bayesian Inference #Stochastic processes and statistical mechanics #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.48550/arxiv.1601.06001
5 pages 4 figures, submitted for publication
openalex publication_date 2016/01/22 · arxiv created 2016/01/28 · arxiv updated 2016/01/29 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
The pseudorapidity density (dN/deta) for p+p, p+A and A+A(B) collisions, and the mean multiplicity <Nch> for ee, ep, and p+p collisions, are studied for an inclusive range of beam energies (Roots). Characteristic scaling patterns are observed for both dN/deta and <Nch>, consistent with a thermal particle production mechanism for the bulk of the soft particles produced in all of these systems. They also validate an essential role for quark participants in these collisions. The scaled values for dN/deta and <Nch> are observed to factorize into contributions which depend on log(Roots) and the number of nucleon or quark participant pairs (Npp). Quantification of these contributions give expressions which serve to systematize dN/deta and <Nch> measurements spanning nearly four orders of magnitude in Roots, and to predict their values as a function of Roots and Npp.