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
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