Measurements of multiplicity fluctuations of identified hadrons in inelastic proton-proton interactions at the CERN Super Proton Synchrotron

Abstract

Measurements of multiplicity fluctuations of identified hadrons produced in inelastic p+p interactions at 31, 40, 80, and 158~\GeVc beam momentum are presented. Three different measures of multiplicity fluctuations are used: the scaled variance $\omega$ and strongly intensive measures $\Sigma$ and $\Delta$. These fluctuation measures involve second and first moments of joint multiplicity distributions. Data analysis is performed using the Identity method which corrects for incomplete particle identification. Strongly intensive quantities are calculated in order to allow for a direct comparison to corresponding results on nucleus-nucleus collisions. The results for different hadron types are shown as a function of collision energy. A comparison with predictions of string-resonance Monte-Carlo models: Epos, Smash and Venus, is also presented.

32 pages, 14 figures

References in corpus (6)

• Strongly Intensive Quantities
• Identity Method for the Determination of the Moments of Multiplicity Distributions
• Identity method to study chemical fluctuations in relativistic heavy-ion collisions
• Energy dependence of kaon-to-proton ratio fluctuations in central Pb+Pb collisions from $\sqrt{s_{NN}}$ = 6.3 to 17.3 GeV
• Identity Method Revisited
• Strongly Intensive Measures for Particle Number Fluctuations: Effects of Hadronic Resonances

Cited by in corpus (1)

• Eliminating $volume$ fluctuations in fixed-target heavy-ion experiments