Pomeron as Quark-Gluon Strings and Multiple Hadron Production at SPS Collider Energies

http://cds.cern.ch/record/149695/files/198402311.pdf

Scaling violation favouring high multiplicity events at 540 GeV CMS energy

https://cds.cern.ch/record/164226/files/CM-P00071050.pdf

Scaling violations in multiplicity distributions at 200 and 900 GeV

A new empirical regularity for multiplicity distributions in place of KNO scaling

The energy-dependence of charged particle mean multiplicity and pseudorapidity density at midrapidity measured in nucleus–nucleus and (anti)proton–proton collisions are studied in the entire available energy range. The study is performed using a model, which considers the multiparticle production process according to the dissipating energy of the participants and their types, namely a combination of the constituent quark picture together with Landau relativistic hydrodynamics. The model reveals interrelations between the variables under study measured in nucleus–nucleus and nucleon–nucleon collisions. Measurements in nuclear reactions are shown to be well reproduced by the measurements in pp/
 ${\bar{\mathrm{p}}}{\mathrm{p}}$
 interactions and the corresponding fits are presented. Different observations in other types of collisions are discussed in the framework of the proposed model. Predictions are made for measurements at the forthcoming LHC energies.

/pdf/relating-multihadron-production-in-hadronic-and-nuclear-3kv4td5egy.pdf

A. Leveque

Papers

Average charged particle multiplicity and topological cross sections in 50 GeVc and 69 GeVc pp interactions: Collaboration France-Soviet Union

Negative pion production in proton-proton interactions at 69 GeV/c

Two body correlations between negative pions in pp interactions at 69 GeV/c