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Selected Works of Craig Ogilvie
Article
Antilambda production in Au+Au collisions at 11.7A GeV/c
Physical Review Letters (2001)
  • B. B. Back, Argonne National Laboratory
  • R. R. Betts, University of Illinois at Chicago
  • J. Chang, University of California, Riverside
  • C. Y. Chi, Columbia University
  • Y. Y. Chu, Brookhaven National Laboratory
  • J. B. Cumming, Brookhaven National Laboratory
  • J. C. Dunlop, Massachusetts Institute of Technology
  • W. Eldredge, University of California, Riverside
  • S. Y. Fung, University of California, Riverside
  • R. Ganz, University of Illinois at Chicago
  • E. Garcia, University of Maryland at College Park
  • A. Gillitzer, Argonne National Laboratory
  • G. Heintzelman, Massachusetts Institute of Technology
  • W. F. Henning, Argonne National Laboratory
  • D. J. Hofman, The University of Illinois at Chicago
  • B. Holzman, The University of Illinois at Chicago
  • J. H. Kang, Yonsei University
  • E. J. Kim, Yonsei University
  • Y. Kwon, Yonsei University
  • D. McLeod, University of Illinois at Chicago
  • A. C. Mignerey, University of Maryland at College Park
  • M. Moulson, Columbia University
  • V. Nanal, Argonne National Laboratory
  • C. A. Ogilvie, Massachusetts Institute of Technology
  • R. Pak, University of Rochester
  • A. Ruangma, University of Maryland at College Park
  • D. E. Russ, University of Maryland at College Park
  • R. Seto, University of California, Riverside
  • P. J. Stanskas, University of Maryland, College Park
  • G. S. F. Stephans, Massachusetts Institute of Technology
  • H. Wang, University of California, Riverside
  • F. L. H. Wolfs, University of Rochester
  • A. H. Wuosmaa, Argonne National Laboratory
  • H. Xiang, University of California, Riverside
  • G. H. Xu, University of California, Riverside
  • H. B. Yao, Massachusetts Institute of Technology
  • C. M. Zou, University of California, Riverside
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Abstract
We present results for antilambda and antiproton production in Au + Au collisions at 11.7 A GeV/c including spectra and extracted invariant yields for both species in central and peripheral collisions in the rapidity range 1.0 < v < 1.4. The antilambda yield increases from dN(<(<Lambda>)over bar>)/dy = 1.2(-0.6-0.2)(+0.7+0.2) x 10-3 in peripheral collisions to 19(-5-2)(+4+3) x 10(-3) in central collisions. The direct antiproton yield is deduced from the measured total antiproton spectra to extract the ratio of antilambda-to-direct-antiproton production. The <(<Lambda>)over bar>/(p) over bar ratio near midrapidity increases from 0.26(-0.15-0.4)(+0.19+0.5) in peripheral collisions to 3.6(-1.8-1.1)(+4/7+2.7) in central collisions, a value larger than current theoretical estimates.
Disciplines
Publication Date
December, 2001
DOI
10.1103/PhysRevLett.87.242301
Publisher Statement
Copyright American Physical Society 2001. Posted with permission.
Citation Information
B. B. Back, R. R. Betts, J. Chang, C. Y. Chi, et al.. "Antilambda production in Au+Au collisions at 11.7A GeV/c" Physical Review Letters Vol. 87 Iss. 24 (2001) p. 242301
Available at: http://works.bepress.com/craig-ogilvie/114/