Phys. Rev. Lett. 91, 162301 (2003) [5 pages]
Comparison of Source Images for Protons, π-’s, and Λ’s in 6A GeV Au+Au Collisions
P. Chung et al. E895 Collaboration
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P. Chung1, N. N. Ajitanand1, J. M. Alexander1, M. Anderson6, D. Best14, F. P. Brady6, T. Case14, W. Caskey6, D. Cebra6, J. L. Chance6, B. Cole11, K. Crowe14, A. C. Das3, J. E. Draper6, M. L. Gilkes1, S. Gushue1,9, M. Heffner6,2b, A. S. Hirsch7, E. L. Hjort7, W. Holzmann1, L. Huo13, M. Issah1, M. Justice5, M. Kaplan8, D. Keane5, J. C. Kintner12, J. Klay6, D. Krofcheck10, R. A. Lacey1, J. Lauret1, M. A. Lisa3, H. Liu5, Y. M. Liu13, R. McGrath1, Z. Milosevich8, G. Odyniec14, D. L. Olson14, S. Panitkin5, N. T. Porile7, G. Rai14, H. G. Ritter14, J. L. Romero6, R. Scharenberg7, B. Srivastava7, N. T. B Stone14, T. J. M. Symons14, A. Taranenko1, J. Whitfield8, R. Witt5, L. Wood6, and W. N. Zhang13 (E895 Collaboration)
1Departments of Chemistry and Physics, SUNY, Stony Brook, New York 11794-3400, USA
3Ohio State University, Columbus, Ohio 43210, USA
5Kent State University, Kent, Ohio 44242, USA
6University of California, Davis, California 95616, USA
14Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
8Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
9Brookhaven National Laboratory, Upton, New York 11973, USA
10University of Auckland, Auckland, New Zealand
11Columbia University, New York, New York 10027, USA
12St. Mary’s College, Moraga, California 94575, USA
13Harbin Institute of Technology, Harbin, 150001 People’s Republic of China
7Purdue University, West Lafayette, Indiana 47907-1396, USA
D. Brown2b, S. Pratt4b, F. Wang7b, and P. Danielewicz4b
2bLivermore National Laboratory, Livermore, California 94550, USA
4bNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
7bPurdue University, West Lafayette, Indiana 47907-1396, USA
Received 28 December 2002; published 14 October 2003
Source images are extracted from two-particle correlations constructed from strange and nonstrange hadrons produced in 6A GeV Au+Au collisions. Very different source images result from pp vs pΛ vs π-π- correlations. Scaling by transverse mass can describe the apparent source size ratio for p/π- but not for Λ/π- or Λ/p. These observations suggest important differences in the space-time emission histories for protons, pions, and neutral strange baryons produced in the same events.
©2003 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.91.162301
DOI: 10.1103/PhysRevLett.91.162301
PACS: 25.75.Ld
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