A strangelet search in Si+Pt and Au+Pt collisions at alternating-gradient synchrotron (AGS) energies, using a focusing spectrometer, sensitive to mass per charge of 3-14 GeV/${\mathit{c}}^2$ was conducted during the 1992 and 1993 heavy ion runs at the AGS. The null results thereof are presented as upper limits on the invariant production cross section, in the range of ${10}^{-5\mathrm{}}$-${10}^{-4\mathrm{}}$ mb ${\mathit{c}}^3$/${\mathrm{GeV}}^2$, and model dependent sensitivity limits in the range of ${10}^{-7\mathrm{}}$-${10}^{-5\mathrm{}}$ per collision. Measurements of the production cross sections of several nonstrange nuclear systems, from $p$ to ${}_{}{}^7{}_{}{}^{}\mathrm{Be}$ and ${}_{}{}^8{}_{}{}^{}\mathrm{Li}$, the background of the strangelet search, are also presented.

• Received 8 November 1995

DOI:https://doi.org/10.1103/PhysRevC.54.R15