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System, centrality, and transverse mass dependence of two-pion correlation radii in heavy ion collisions at 11.6A and 14.6A GeV/c

  • L. Ahle*
  • , Y. Akiba
  • , K. Ashktorab
  • , M. D. Baker
  • , D. Beavis
  • , P. Beery
  • , H. C. Britt
  • , B. Budick
  • , J. Chang
  • , C. Chasman
  • , Z. Chen
  • , C. Y. Chi
  • , Y. Y. Chu
  • , V. Cianciolo
  • , B. A. Cole
  • , J. B. Costales
  • , H. J. Crawford
  • , J. B. Cumming
  • , R. Debbe
  • , J. C. Dunlop
  • W. Eldredge, J. Engelage, S. Y. Fung, E. Garcia, M. Gonin, S. Gushue, H. Hamagaki, L. F. Hansen, R. S. Hayano, S. Hayashi, G. Heintzelman, S. Homma, E. Judd, H. Kaneko, J. Kang, S. Kaufman, W. L. Kehoe, E. J. Kim, A. Kumagai, K. Kurita, R. J. Ledoux, J. H. Lee, M. J. LeVine, J. Luke, Y. Miake, A. Mignerey, D. P. Morrison, R. J. Morse, B. Moskowitz, M. Moulson, C. Müntz, S. Nagamiya, M. N. Namboodiri, T. K. Nayak, C. A. Ogilvie, J. Olness, C. G. Parsons, L. P. Remsberg, D. Roehrich, P. Rothschild, H. Sako, H. Sakurai, T. C. Sangster, R. Seto, J. Shea, K. Shigaki, R. A. Soltz, P. Stankus, S. G. Steadman, G. S.F. Stephans, T. W. Sung, Y. Tanaka, M. J. Tannenbaum, J. H. Thomas, S. R. Tonse, S. Ueno-Hayashi, J. H. Van Dijk, F. Videbæk, O. Vossnack, V. Vutsadakis, F. Wang, Y. Wang, H. E. Wegner, D. Woodruff, Y. Wu, H. Xiang, G. H. Xu, K. Yagi, X. Yang, H. Yao, D. Zachary, W. A. Zajc, F. Zhu
*Corresponding author for this work
  • Massachusetts Institute of Technology
  • Lawrence Livermore National Laboratory
  • High Energy Accelerator Research Organization, Tsukuba
  • Brookhaven National Laboratory
  • University of California at Riverside
  • New York University
  • Columbia University
  • Oak Ridge National Laboratory
  • University of California at Berkeley
  • Yale University
  • University of Maryland, College Park
  • University of Illinois at Chicago
  • The University of Tokyo
  • Kyoto University
  • Yonsei University
  • Argonne National Laboratory
  • University of Tsukuba
  • Rikkyo University
  • GSI Helmholtz Centre for Heavy Ion Research
  • Iowa State University
  • University of Bergen
  • United States Department of Energy
  • Kyushu University
  • Lawrence Berkeley National Laboratory
  • CERN

Research output: Contribution to journalJournal articlepeer-review

Abstract

Two-pion correlation functions are analyzed at midrapidity for three systems (14.6A GeV/c Si+Al, Si+Au, and 11.6A GeV/c Au+Au), seven distinct centrality conditions, and different kT bins in the range 0.1-0.5 GeV/c. Source reference frames are determined from fits to the Yano-Koonin source parametrization. Bertsch-Pratt radius parameters are shown to scale linearly with both number of projectile and total participants as obtained from a Glauber model calculation. A finite lifetime parameter that increases linearly with system/centrality is also reported. The mT dependences of the Bertsch-Pratt radii for the central Si+Au and central Au+Au systems differ only by an overall normalization factor given by the measured system/centrality dependence.

Original languageEnglish
Article number054906
Pages (from-to)549061-5490615
Number of pages4941555
JournalPhysical Review C - Nuclear Physics
Volume66
Issue number5
DOIs
StatePublished - 2002.11.1

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