Local Multiplicity Fluctuations as a Signature of Critical Hadronization at LHC

Abstract

In central Pb-Pb collisions at LHC the multiplicity of particles produced is so high that it should become feasible to examine the nature of transition from the deconfined quark-gluon state to the confined hadron state by methods that rely on the availability of high multiplicity events. We consider four classes of the transition process ranging from critical behavior to totally random behavior, depending on whether or not there is clustering of quarks and on whether or not there is contraction of dense clusters due to confinement. Fluctuations of bin multiplicities in each event are quantified, and then the event-by-event fluctuations of spatial patterns are analyzed. A sequence of measures are proposed and are shown to be effective in capturing the essence of the differences among the classes of simulated events. It is demonstrated that a specific index has a low value for critical transition but a larger value if the hadronization process is random.

11 pages in RevTeX4 with 9 figures

References in corpus (4)

• Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector
• Relating multihadron production in hadronic and nuclear collisions
• Particle Production at Large Transverse Momentum with ALICE
• Spectra of Identified Hadrons in Pb-Pb Collisions at LHC

Cited by in corpus (7)

• Fluctuations in Charged Particle Multiplicities in Relativistic Heavy-Ion Collisions
• Ising-QCD phenomenology close to the critical point
• Overview of intermittency analysis in heavy-ion collisions
• Multifractal Characteristics of Multiparticle Production in Heavy-Ion Collisions at SPS Energies
• Correlation Integral vs. second order Factorial Moments and an efficient computational technique
• Intermittency study of charged particles generated in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}\text{= 2.76 TeV}$ using EPOS3
• Intermittency of charged particles in the hybrid UrQMD+CMC model at energies available at the BNL Relativistic Heavy Ion Collider