Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au plus Au collisions at root s(NN) =200 GeV

Date
2007-09-01
Authors
Adler, S.
Belikov, Sergey
Ogilvie, Craig
Bhagavatula, S.
Constantin, Paul
Grau, Nathan
Hill, John
Lajoie, John
Lebedev, Alexandre
Ogilvie, Craig
Rak, Jan
Rosati, Marzia
Wohn, F.
et al.
Journal Title
Journal ISSN
Volume Title
Publisher
Source URI
Altmetrics
Authors
Research Projects
Organizational Units
Physics and Astronomy
Organizational Unit
Journal Issue
Series
Abstract

Longitudinal density correlations of produced matter in Au+Au collisions at root s(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-part. A local maximum is seen at N-part similar to 90, with corresponding energy density based on the Bjorken picture of epsilon(Bj)tau similar to 2.4 GeV/(fm(2)c) with a transverse area size of 60 fm(2). This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.

Description
<p>This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+ Au collisions at s NN= 200 GeV." <em>Physical Review C</em> 76, no. 3 (2007): 034903. DOI:<a href="http://dx.doi.org/10.1103/PhysRevC.76.034903" target="_blank">10.1103/PhysRevC.76.034903</a>. Posted with permission.</p>
Keywords
Citation
Collections