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Article
Charged Kaon Interferometric Probes of Space-Time Evolution in Au plus Au Collisions at s(NN)=200 GeV
Physical Review Letters
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
10-1-2009
DOI
10.1103/PhysRevLett.103.142301
Abstract
Bose-Einstein correlations of charged kaons are used to probe Au+Au collisions at s(NN)=200 GeV and are compared to charged pion probes, which have a larger hadronic scattering cross section. Three-dimensional Gaussian source radii are extracted, along with a one-dimensional kaon emission source function. The centrality dependences of the three Gaussian radii are well described by a single linear function of N-part(1/3) with a zero intercept. Imaging analysis shows a deviation from a Gaussian tail at r greater than or similar to 10 fm, although the bulk emission at lower radius is well described by a Gaussian. The presence of a non-Gaussian tail in the kaon source reaffirms that the particle emission region in a heavy-ion collision is extended, and that similar measurements with pions are not solely due to the decay of long-lived resonances.
Copyright Owner
American Physical Society
Copyright Date
2009
Language
en
File Format
application/pdf
Citation Information
S. Afanasiev, Sergey Belikov, Paul Constantin, Nathan C. Grau, et al.. "Charged Kaon Interferometric Probes of Space-Time Evolution in Au plus Au Collisions at s(NN)=200 GeV" Physical Review Letters Vol. 103 Iss. 14 (2009) p. 142301 Available at: http://works.bepress.com/craig-ogilvie/235/
This article is published as Afanasiev, S., C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, A. Al-Jamel, K. Aoki et al. "Charged Kaon Interferometric Probes of Space-Time Evolution in Au+ Au Collisions at s NN= 200 GeV." Physical review letters 103, no. 14 (2009): 142301. DOI:10.1103/PhysRevLett.103.142301. Posted with permission.