Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at {radical}(s{sub NN})=200 GeV

Journal Article · Sat Sep 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.034903· OSTI ID:21064368

Adler, S S; Aidala, C; Aronson, S H; Chujo, T; David, G; Desmond, E J; Drees, K A; Ewell, L; Franz, A; Guryn, W; Haggerty, J S; Harvey, M; Johnson, B M; Kistenev, E; Kroon, P J; Makdisi, Y I; Mioduszewski, S; Mitchell, J T; Morrison, D P; O'Brien, E ^[1]

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1. Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

Longitudinal density correlations of produced matter in Au+Au collisions at {radical}(s{sub NN})=200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted {alpha}{xi} parameter, related to the susceptibility of the density fluctuations in the long-wavelength limit, exhibits a nonmonotonic behavior as a function of the number of participant nucleons, N{sub part}. A local maximum is seen at N{sub part}{approx}90, with corresponding energy density based on the Bjorken picture of {epsilon}{sub Bj}{tau}{approx}2.4 GeV/(fm{sup 2}c) with a transverse area size of 60 fm{sup 2}. This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.

• OSTI ID: 21064368
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 76, Issue 3; Other Information: DOI: 10.1103/PhysRevC.76.034903; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). PHENIX Collaboration; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED PARTICLES
CORRELATIONS
DENSITY
DISTRIBUTION
ENERGY DENSITY
FLUCTUATIONS
GEV RANGE
GINZBURG-LANDAU THEORY
GOLD 197 REACTIONS
GOLD 197 TARGET
MULTIPLICITY
NUCLEAR MATTER
NUCLEONS
PARTICLE RAPIDITY
QUARK MATTER
WAVELENGTHS