Search for strangelets and other rare objects in Au + Pt collisions at the AGS using a fixed-angle focusing spectrometer

摘要

During the 1993 AGS heavy ion run, experiment E886 conducted a strangelet search in Au + Pt reactions, with beam momentum of 10.8 GeV/c per nucleon. Presented here are the upper limit for strangelet production, invariant cross sections for p, t, d, (sup 3)He, (sup 4)He, (sup 6)He, (sup 8)He, (sup 6)Li, (sup 7)Li, (sup 8)Li and (sup 7)Be, along with a demonstration of their agreement with a coalescence model fit to data collected by E886 during the 1992 engineering run, and upper limits for production cross sections for other rare objects, such as (H dibaryon)-nucleus systems. All results reported are preliminary.