Measurement of event-by-event transverse momentum and multiplicity fluctuations using strongly intensive measures $\Delta [P_T,N]$ and $\Sigma [P_T,N]$ in nucleus-nucleus collisions at the CERN Super Proton Synchrotron

Abstract

Results from the NA49 experiment at the CERN SPS are presented on event-by-event transverse momentum and multiplicity fluctuations of charged particles, produced at forward rapidities in central Pb+Pb interactions at beam momenta 20$A$, 30$A$, 40$A$, 80$A$, and 158$A$ GeV/c, as well as in systems of different size ($p+p$, C+C, Si+Si, and Pb+Pb) at 158$A$ GeV/c. This publication extends the previous NA49 measurements of the strongly intensive measure ${\Phi }_{p_T}$ by a study of the recently proposed strongly intensive measures of fluctuations $\Delta [P_T,N]$ and $\Sigma [P_T,N]$. In the explored kinematic region transverse momentum and multiplicity fluctuations show no significant energy dependence in the SPS energy range. However, a remarkable system size dependence is observed for both $\Delta [P_T,N]$ and $\Sigma [P_T,N]$, with the largest values measured in peripheral Pb+Pb interactions. The results are compared with NA61/SHINE measurements in $p+p$ collisions, as well as with predictions of the UrQMD and EPOS models.

arXiv comment12 pages, 14 figures, to be submitted to PRC

References in corpus (23)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Event-by-Event Fluctuations in Heavy Ion Collisions and the QCD Critical Point
• Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
• Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC
• Energy and system size dependence of chemical freeze-out in relativistic nuclear collisions
• Pion and kaon production in central Pb+Pb collisions at 20A and 30A GeV: Evidence for the onset of deconfinement
• Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC
• Using Higher Moments of Fluctuations and their Ratios in the Search for the QCD Critical Point
• Strongly Intensive Quantities
• Transverse Momentum Fluctuations in Nuclear Collisions at 158 AGeV
• Critical Opalescence in Baryonic QCD Matter
• On Normalization of Strongly Intensive Quantities
• Energy Dependence of Multiplicity Fluctuations in Heavy Ion Collisions at the CERN SPS
• Centrality and system size dependence of multiplicity fluctuations in nuclear collisions at 158 AGeV
• Pion production from a critical QCD phase
• Generalizing Phi-measure of event-by-event fluctuations in high-energy heavy-ion collisions
• Transverse momentum and energy correlations in the equilibrium system from high-energy nuclear collisions
• Critical QCD in Nuclear Collisions
• Search for the critical point of strongly interacting matter in NA49
• Strongly Intensive Measures for Transverse Momentum and Particle Number Fluctuations
• Energy and Transverse Momentum Fluctuations in the Equilibrium Quantum Systems
• Influence of Impact Parameter Fluctuations on Transverse Momentum Fluctuations

Cited by in corpus (9)

• Mapping the Phases of Quantum Chromodynamics with Beam Energy Scan
• Challenges in QCD matter physics - The Compressed Baryonic Matter experiment at FAIR
• Status and initial physics performance studies of the MPD experiment at NICA
• Particlization of an interacting hadron resonance gas with global conservation laws for event-by-event fluctuations in heavy-ion collisions
• Modeling net-charge fluctuations in heavy-ion collisions at the LHC
• Eliminating $volume$ fluctuations in fixed-target heavy-ion experiments
• Measurements of multiplicity fluctuations of identified hadrons in inelastic proton-proton interactions at the CERN Super Proton Synchrotron
• Minimizing statistical and systematic bias in transverse momentum correlations for relativistic heavy-ion collisions
• Energy and system size dependence of strongly intensive fluctuation measures in heavy-ion collisions at FAIR energies