Micro-Canonical Hadron Production in pp collisions

Abstract

We apply a microcanonical statistical model to investigate hadron production in pp collisions. The parameters of the model are the energy E and the volume V of the system, which we determine via fitting the average multiplicity of charged pions, protons and antiprotons in pp collisions at different collision energies. We then make predictions of mean multiplicities and mean transverse momenta of all identified hadrons. Our predictions on nonstrange hadrons are in good agreement with the data, the mean transverse momenta of strange hadron as well. However, the mean multiplicities of strange hadrons are overpredicted. This agrees with canonical and grandcanonical studies, where a strange suppression factor is needed. We also investigate the influence of event-by-event fluctuations of the E parameter.

15 pages 11 figures

References in corpus (4)

• Thermal Hadron Production in High Energy Heavy Ion Collisions
• Microcanonical Treatment of Hadronizing the Quark-Gluon Plasma
• Comparison of Microcanonical and Canonical Hadronization
• Importance of reaction volume in hadronic collisions: Canonical enhancement

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• Dynamics of Chemical Equilibrium of Hadronic Matter Close to $T_c$
• Statistical hadronization and hadronic microcanonical ensemble I
• Forward and midrapidity like-particle ratios from p+p collisions at sqrt(s)=200 GeV
• Chemical equilibration due to heavy Hagedorn states
• Particle Ratios as a Probe of the QCD Critical Temperature
• Thermalization through Hagedorn states - the importance of multiparticle collisions
• Particle Ratios and the QCD Critical Temperature
• Review of Recent and Future Needs in Hadronic Flavor Particle Production Measurements