Antilambda production in Au + Au collisions at 11.7A GeV/c

B. B. Back, J. Chang, W. C. Chang, C. Y. Chi, Y. Y. Chu, J. B. Cumming, J. C. Dunlop, W. Eldredge, S. Y. Fung, R. Ganz, E. Garcia, A. Gillitzer, G. Heintzelman, W. F. Henning, D. J. Hofman, B. Holzman, J. H. Kang, E. J. Kim, S. Y. Kim, Y. KwonD. McLeod, A. C. Mignerey, M. Moulson, V. Nanal, C. A. Ogilvie, R. Pak, A. Ruangma, D. E. Russ, R. Seto, P. J. Stanskas, G. S. Stephans, H. Wang, F. L. Wolfs, A. H. Wuosmaa, H. Xiang, G. H. Xu, H. B. Yao, C. M. Zou, R. R. Betts

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Abstract

The production of antilambda and antiproton in Au+Au collisions at 11.7A GeV/c was determined. The spectra and invariant yields for both species in central and peripheral collisions were obtained in the rapidity range 1.0<y<1.4. The direct antiproton yield was determined from the measurement of total antiproton spectra to extract the ratio of antilambda-to-direct-antiproton production. The ratio obtained near midrapidity was found to increase with a value larger than theoretical estimates.

Original languageEnglish
Article number242301
Pages (from-to)2423011-2423014
Number of pages4
JournalPhysical review letters
Volume87
Issue number24
Publication statusPublished - 2001 Dec 10

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Back, B. B., Chang, J., Chang, W. C., Chi, C. Y., Chu, Y. Y., Cumming, J. B., Dunlop, J. C., Eldredge, W., Fung, S. Y., Ganz, R., Garcia, E., Gillitzer, A., Heintzelman, G., Henning, W. F., Hofman, D. J., Holzman, B., Kang, J. H., Kim, E. J., Kim, S. Y., ... Betts, R. R. (2001). Antilambda production in Au + Au collisions at 11.7A GeV/c. Physical review letters, 87(24), 2423011-2423014. [242301].