Antiproton production in 14.6 AGeV c Si+A collisions

T. Abbott, Y. Akiba, D. Beavis, M. A. Bloomer, P. D. Bond, C. Chasman, Z. Chen, Y. Y. Chu, B. A. Cole, J. B. Costales, H. J. Crawford, J. B. Cumming, R. Debbe, J. Engelage, S. Y. Fung, L. Grodzins, S. Gushue, H. Hamagaki, O. Hansen, R. HayanoS. Hayashi, S. Homma, H. Z. Huang, Y. Ikeda, I. Juricic, J. Kang, S. Kaufman, K. Kimura, K. Kitamura, K. Kurita, R. J. Ledoux, M. J. Levine, Y. Miake, R. J. Morse, B. Moskowitz, S. Nagamiya, J. Olness, C. G. Parsons, L. P. Remsberg, D. Roehrich, H. Sakurai, M. Sarabura, A. Shor, P. Stankus, S. G. Steadman, G. S.F. Stephans, T. Sugitate, M. Tanaka, M. J. Tannenbaum, M. Torikoshi, J. H. van Dijk, F. Videbæk, M. Vient, P. Vincent, O. Vossnack, E. Vulgaris, V. Vutsadakis, W. A. Watson, H. E. Wegner, D. S. Woodruff, Y. D. Wu, W. A. Zajc

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Antiproton production cross sections have been measured for minimum bias and central Si+Al and Si+Au collisions at 14.6 A GeV c. The data presented cover the range of transverse momentum from 0.3 to 1.2 GeV c and lab rapidities from 1.1 to 1.7 units. The relative p π- and p K- yields are found to be the smallest for the heaviest system measured, central Si+Au collisions. For these collisions, the p π- ratio, determined from integrated yields for 1.1≤y≤1.7, is (0.84±0.07)×10-3. In the same rapidity interval, the average antiproton inverse m⊥ slope is 141±14 MeV for central Si+Al and central Si+Au collisions.

Original languageEnglish
Pages (from-to)447-452
Number of pages6
JournalPhysics Letters B
Issue number3-4
Publication statusPublished - 1991 Nov 21

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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