- th / 9 80 80 19 v 1 8 A ug 1 99 8 d ′ production in heavy ion collisions
نویسندگان
چکیده
The production of d ′ dibaryons in heavy ion collisions due to the elementary process N N → d ′ π is considered. The N N → d ′ π cross section is estimated using the vacuum d ′ width Γ d ′ ≈ 0.5 MeV extracted from data on the double charge exchange reactions on nuclei. The d ′ production rate per single collision of heavy ions is estimated at an incident beam energy of 1 A·GeV within the framework of the Quantum Molecular Dynamics transport model. We suggest to analyse the invariant mass spectrum of the N N π system in order to search for an abundance of events with the invariant mass of the d ′ dibaryon. The d ′ peak is found to exceed the statistical fluctuations of the background at a 6σ level for 2 10 5 · A central collisions of heavy ions with the atomic number A.
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