Comparison of source images for protons, pi-'s, and lambda's in 6A GeV Au+Au collisions.
/ Authors
P. Chung, N. Ajitanand, J. Alexander, M. Anderson, D. Best, F. Brady, T. Case, W. Caskey, D. Cebra, J. Chance
and 45 more authors
B. Cole, K. Crowe, A. Das, J. Draper, M. Gilkes, S. Gushue, M. Heffner, A. Hirsch, E. Hjort, W. Holzmann, L. Huo, M. Issah, M. Justice, M. Kaplan, D. Keane, J. Kintner, J. Klay, D. Krofcheck, R. Lacey, J. Lauret, M. Lisa, H. Liu, Y. M. Liu, R. McGrath, Z. Milosevich, G. Odyniec, D. Olson, S. Panitkin, N. Porile, G. Rai, H. Ritter, J. Romero, R. Scharenberg, B. Srivastava, N. Stone, T. Symons, A. Taranenko, J. Whitfield, R. Witt, L. Wood, W. N. Zhang, Duncan A. Brown, S. Pratt, F. Wang, P. Danielewicz
/ Abstract
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 p Lambda vs pi(-)pi(-) correlations. Scaling by transverse mass can describe the apparent source size ratio for p/pi(-) but not for Lambda/pi(-) or Lambda/p. These observations suggest important differences in the space-time emission histories for protons, pions, and neutral strange baryons produced in the same events.
Journal: Physical Review Letters