Charged-particle multiplicity and pseudorapidity distributions measured with the PHOBOS detector in Au+Au , Cu+Cu , d+Au , and p+p collisions at ultrarelativistic energies
Year: 2011
Type: article
Abstract: Pseudorapidity distributions of charged particles emitted in $\text{Au}+\text{Au}$, $\text{Cu}+\text{Cu}$, $d+\text{Au}$, and $p+p$ collisions over a wide energy range have been measured using the PHOBOS detector at the BNL Relativistic Heavy-Ion Collider (RHIC). The centrality dependence of both the charged particle distributions and the multiplicity at midrapidity were measured. Pseudorapidity distributions of charged particles emitted with $|\ensuremath{\eta}|<5.4$, which account for between 95% and 99% of the total charged-particle emission associated with collision participants, are presented for different collision centralities. Both the midrapidity density ${\mathit{dN}}_{\text{ch}}/d\ensuremath{\eta}$ and the total charged-particle multiplicity ${N}_{\text{ch}}$ are found to factorize into a product of independent functions of collision energy, $\sqrt{{s}_{{}_{\mathit{NN}}}}$, and centrality given in terms of the number of nucleons participating in the collision, ${N}_{\text{part}}$. The total charged particle multiplicity, observed in these experiments and those at lower energies, assumes a linear dependence of $(\mathrm{ln}{s}_{{}_{\mathit{NN}}}){}^{2}$ over the full range of collision energy of $\sqrt{{s}_{{}_{\mathit{NN}}}}=2.7$--200 GeV.
Source: Physical Review C
Authors: B. Alver, B. B. Back, M. D. Baker, M. Ballintijn, D. S. Barton, R. R. Betts, A. A. Bickley, R. Bindel, A. Budzanowski, W. Busza, A. Carroll, Z. Chai, V. Chetluru, M. P. Decowski, E. García, T. Gburek, N. George, K. Gulbrandsen, S. Gushue, C. Halliwell, J. Hamblen, G. A. Heintzelman, C. Henderson, D. J. Hofman, R. S. Hollis, R. Hołyński, B. Holzman, A. Iordanova, E. Johnson, J. L. Kane, J. Katzy, N. Khan, J. Kotuła, W. Kucewicz, P. Kulinich, C. M. Kuo, W. Li, W. T. Lin, C. Loizides, S. Manly, D. McLeod, J. Michałowski, A. C. Mignerey, R. Nouicer, A. Olszewski, R. Pak, I. C. Park, H. Pernegger, C. Reed, L. P. Remsberg, M. Reuter, C. Roland, G. Roland, L. Rosenberg, J. Sagerer, P. Sarin, P. Sawicki, I. Sedykh, W. Skulski, C. E. Smith, S. G. Steadman, P. Steinberg, G. S. F. Stephans, M. Stodulski, A. Sukhanov, M. B. Tonjes, A. Trzupek, C. Vale, G. J. van Nieuwenhuizen, S. S. Vaurynovich, R. Verdier, G. I. Veres, B. Wadsworth, P. Walters, E. Wenger, F. L. H. Wolfs, B. Wosiek, K. Woźniak, A. H. Wuosmaa, B. Wysłouch
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Awards: G102163711, G1336448005, RESEARCH IN NUCLEAR PHYSICS, G222768804, G262962599, G2691759798, G338944111, G3897559065, STUDY THE COLLECTIVE BEHAVIOR OF GLUONS IN HIGH ENERGY NUCLEAR COLLISIONS, STUDY COLLECTIVE CHARACTERISTICS OF HIGH-ENERGY NUCLEAR COLLISIONS AT THE AGS AND RHIC, Relativistic Heavy-Ion Physics at the University of Rochester, G513797252, G5292656900, REACTION MECHANISM STUDIES OF HEAVY ION INDUCED NUCLEAR REACTIONS, G5840093596, REACTION MECHANISM STUDIES OF HEAVY ION INDUCED REACTIONS, HEAVY ION NUCLEAR PHYSICS RESEARCH AT THE UNIVERSITY OF ILLINOIS AT CHICAGO, G6848031779, G7234877079, G7368700025, G8191269065, Construction of the PHOBOS Time-of-Flight Wall, LABORTORY FOR NUCLEAR SCIENCE (BATES CERN-L3), G9000331923, Relativistic Heavy-Ion Physics at the University of Rochester, G969889393
OpenAlex ID: W2002014148