2015/06/30 by Edward K. G. Sarkisyan, E.K.G. Sarkisyan, Aditya Nath Mishra +5 · 4 citations
Physics and Astronomy · #Centrality #Charged particle #Hadron #Heavy ion #High-Energy Particle Collisions Research #Ion #Large Hadron Collider #Multiplicity (mathematics) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudorapidity #Quantum Chromodynamics and Particle Interactions #Relativistic Heavy Ion Collider #Scaling #Spectral line #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevd.93.054046
published as Phys. Rev. D 93, 054046 (2016) · 14 pages, 9 figures, Version similar to the published version in Phys. Rev. D, Fig. 1 caption has gone through minor changes
openalex publication_date 2016/03/30 · arxiv created 2016/04/04 · arxiv updated 2016/04/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
The relation of multihadron production in nucleus-nucleus and (anti)proton-proton collisions is studied by exploring the collision-energy and centrality dependencies of the charged particle mean multiplicity in the measurements to date. The study is performed in the framework of the recently proposed effective-energy approach which, under the proper scaling of the collision energy, combines the constituent quark picture with Landau relativistic hydrodynamics counting for the centrality-defined effective energy of participants. Within this approach, the multiplicity energy dependence and the pseudorapidity spectra from the most central nuclear collisions are well reproduced. The study of the multiplicity centrality dependence reveals a new scaling between the measured pseudorapidity spectra and the calculations. By means of this scaling, referred to as energy-balanced limiting fragmentation scaling, one reproduces the pseudorapidity spectra for all centralities. The scaling elucidates some differences in the multiplicity and midrapidity density centrality dependence obtained at RHIC and LHC. These findings reveal an inherent similarity in the multiplicity energy dependence from the most central collisions and centrality data. Predictions are made for the mean multiplicities to be measured in proton-proton and heavy-ion collisions at the LHC.