Phys. Rev. Lett. 87, 112304 (2001) [5 pages]
Model-Independent Source Imaging Using Two-Pion Correlations in (2 to 8)A GeV Au+Au Collisions
S. Y. Panitkin et al. (E895 Collaboration)
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S. Y. Panitkin7, N. N. Ajitanand12, J. Alexander12, M. Anderson5, D. Best1, F. P. Brady5, T. Case1, W. Caskey5, D. Cebra5, J. Chance5, P. Chung12, B. Cole4, K. Crowe1, A. Das10, J. Draper5, M. Gilkes11, S. Gushue2, M. Heffner5, A. Hirsch11, E. Hjort11, L. Huo6, M. Justice7, M. Kaplan3, D. Keane7, J. Kintner8, J. Klay5, D. Krofcheck9, R. Lacey12, J. Lauret12, M. A. Lisa10, H. Liu7, Y. M. Liu6, R. McGrath12, Z. Milosevich3, G. Odyniec1, D. Olson1, C. Pinkenburg12, N. Porile11, G. Rai1, H. G. Ritter1, J. Romero5, R. Scharenberg11, L. S. Schroeder1, B. Srivastava11, N. T. B. Stone2, T. J. M. Symons1, S. Wang7, R. Wells10, J. Whitfield3, T. Wienold1, R. Witt7, L. Wood5, X. Yang4, W. N. Zhang6, Y. Zhang4, D. A. Brown13, and P. Danielewicz14 (E895 Collaboration) 1Lawrence Berkeley National Laboratory, Berkeley, California 94720
2Brookhaven National Laboratory, Upton, New York 11973
3Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
4Columbia University, New York, New York 10027
5University of California, Davis, California 95616
6Harbin Institute of Technology, Harbin 150001, People's Republic of China
7Kent State University, Kent, Ohio 44242
8St. Mary's College of California, Moraga, California 94575
9University of Auckland, Auckland, New Zealand
10The Ohio State University, Columbus, Ohio 43210
11Purdue University, West Lafayette, Indiana 47907
12State University of New York, Stony Brook, New York 11794
13University of Washington, Seattle, Washington 98195
14Michigan State University, East Lansing, Michigan 48824
Received 9 June 2000; published 24 August 2001
We report a particle source imaging analysis based on two-pion correlations in high multiplicity Au+Au collisions at beam energies between 2A and 8A GeV. We apply the imaging technique introduced by Brown and Danielewicz, which allows a model-independent extraction of source functions with useful accuracy out to relative pion separations of about 20 fm. The extracted source functions have Gaussian shapes. Values of source functions at zero separation are almost constant across the energy range under study. Imaging results are found to be consistent with conventional source parameters obtained from a multidimensional Hanburg-Brown–Twiss analysis.
©2001 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.87.112304
DOI: 10.1103/PhysRevLett.87.112304
PACS: 25.75.Gz
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