Comparison of the Total Charged-Particle Multiplicity in High-Energy Heavy Ion Collisions with e+e- and pp/pbar-p Data
| dc.creator | Back, B. B. | |
| dc.creator | Collaboration, PHOBOS | |
| dc.date | 2003-01-28 | |
| dc.date.accessioned | 2026-07-07T05:37:01Z | |
| dc.date.available | 2026-07-07T05:37:01Z | |
| dc.description | The PHOBOS experiment at RHIC has measured the total multiplicity of primary charged particles as a function of collision centrality in Au+Au collisions at sqrt(s_NN) = 19.6, 130 and 200 GeV. Above sqrt(s_NN) ~ 20 GeV, the total multiplicity per participating nucleon pair (<N_ch>/<N_part/2>) in central events scales with sqrt(s) in the same way as <N_ch> in e+e- data. This is suggestive of a universal mechanism of particle production in strongly-interacting systems, controlled mainly by the amount of energy available for particle production (per participant pair for heavy ion collisions). The same effect has been observed in pp/pbar-p data after correcting for the energy taken away by leading particles. An approximate independence of <N_ch>/<N_part/2> on the number of participating nucleons is also observed, reminiscent of ``wounded nucleon'' scaling (<N_ch> proportional to <N_part>), but with the constant of proportionality set by the multiplicity measured in e+e- data rather than by pp/pbar-p data. | |
| dc.description | 4 pages, 3 figures, submitted to Physical Review Letters | |
| dc.identifier | https://arxiv.org/abs/nucl-ex/0301017 | |
| dc.identifier | http://arxiv.org/abs/nucl-ex/0301017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/81178 | |
| dc.subject | Nuclear Experiment | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Comparison of the Total Charged-Particle Multiplicity in High-Energy Heavy Ion Collisions with e+e- and pp/pbar-p Data | |
| dc.type | text |