Study of light hypernuclei production in 11.5 A GeV/c gold-lead heavy ion collisions.

摘要

We present measurements from BNL AGS Experiment E864 of the $H3L$ invariant multiplicity and of the 90% Confidence Level upper limit on the $H4L$ yield in central 11.5 A GeV/c Au + Pt collisions. The measurements span a rapidity range from center of mass y_cm to y_cm+1 and transverse momentum range of 0. ≤ p_T ≤ 1.5 GeV/c. We compare these results with E864 measurements of stable light nuclei yields and with yields of particle unstable nuclei of the same baryon number. The implications of the results for the strangeness coalescence mechanism are discussed.