Abstract
We have used the E814 apparatus to make a systematic study of antiproton production in collisions of 28Si ions at 14.6 GeV/c per nucleon with targets of Pb, Cu, and Al. We have measured the antiproton yield per interaction as a function of transverse energy and have found the yield to increase by a factor of ≈ 2 in going from the least to the most central collisions on the Pb target. A simple first-collision picture of antiproton production predicts the yield to increase by a factor of ≈ 11. We suggest that the discrepancy may result from the annihilation of antiprotons within the nuclear medium.
Original language | English |
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Pages (from-to) | 599-602 |
Number of pages | 4 |
Journal | Nuclear Physics, Section A |
Volume | 544 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 1992 Jul 20 |
Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics