Antiproton production in p+A collisions at 14.6 GeV/c.

Abstract

Antiproton production cross sections have been measured in minimum bias p+Be, p+Al, p+Cu, and p+Au collisions at 14.6 GeV/c with the E-802 spectrometer at the Brookhaven Alternating Gradient Synchrotron. The antiproton multiplicity at laboratory rapidities 1.0 to 1.6 shows almost no dependence upon the target mass. The p¯ production for p+Be is somewhat lower than an estimation based upon 19–24 GeV/c p+p data. In this rapidity interval the antiproton yield scales by a factor of 28±6 from p+Au to central Si+Au collisions.Received 25 November 1992DOI:https://doi.org/10.1103/PhysRevC.47.R1351©1993 American Physical Society