Electric charge fluctuations in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV

Journal Article · Wed Dec 01 00:00:00 EST 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.064903· OSTI ID:20695834

Alt, C; Betev, L; Billmeier, A; Bramm, R; Dinkelaker, P; Flierl, D; Gazdzicki, M; Kliemant, M; Kniege, S; Kollegger, T; Lungwitz, B; Meurer, C; Mitrovski, M; Renfordt, R; Richard, A; Stock, R; Stroebele, H; Wetzler, A; Zaranek, J ^[1]; Anticic, T ^[2]

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1. Fachbereich Physik der Universitaet, Frankfurt (Germany)
2. Rudjer Boskovic Institute, Zagreb (Croatia); and others

Results are presented on event-by-event electric charge fluctuations in central Pb+Pb collisions at 20A,30A,40A,80A, and 158A GeV. The observed fluctuations are close to those expected for a gas of pions correlated by global charge conservation only. These fluctuations are considerably larger than those calculated for an ideal gas of deconfined quarks and gluons. The present measurements do not necessarily exclude reduced fluctuations from a quark-gluon plasma because these might be masked by contributions from resonance decays.

• OSTI ID: 20695834
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 70, Issue 6; Other Information: DOI: 10.1103/PhysRevC.70.064903; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BAG MODEL
ELECTRIC CHARGES
FLUCTUATIONS
GEV RANGE
GLUONS
LEAD 208 REACTIONS
LEAD 208 TARGET
PARTICLE DECAY
PIONS
QUANTUM CHROMODYNAMICS
QUARK MATTER
QUARKS