Relating multihadron production in hadronic and nuclear collisions

2010/04/30 by Edward K. G. Sarkisyan, Alexander S. Sakharov
Physics and Astronomy · #Dust and Plasma Wave Phenomena #Energy density #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Multiplicity (mathematics) #Nuclear physics research studies #Production (economics) #Pseudorapidity #Quark #Quark–gluon plasma #hep-ex #hep-ph #nucl-ex

paper · pdf · doi:10.1140/epjc/s10052-010-1493-1

published as Eur.Phys.J.C70:533-541,2010 · Europ. Phys. J. C (to appear). Recently CMS reported (arXiv:1005.3299) on the midrapidity density value of 5.78 +/- 0.01(stat) +/- 0.23(syst) in pp collisons at 7 TeV, which agrees well with the value of 5.8 of our predictions

openalex publication_date 2010/11/10 · arxiv created 2010/11/11 · arxiv updated 2010/12/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

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/ pp 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.

Citations

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