Anti-deuteron and anti-He-3 production in s(NN)**(1/2) = 130-GeV Au+Au collisions

The first measurements of light antinucleus production in Au+Au collisions at RHIC are reported. The observed production rates for antideuterons and antihelions are much larger than in lower energy nucleus-nucleus collisions. A coalescence model analysis of the yields indicates that there is little or no increase in the antinucleon freeze-out volume compared to collisions at SPS energy. These analyses also indicate that the antihelion freeze-out volume is smaller than the antideuteron freeze-out volume.

Note:

Submitted to Phys. Rev. Lett

nucleus nucleus: colliding beams
scattering: heavy ion
gold
antinucleus: hadroproduction
deuteron
helium: nuclide
antinucleus: yield
model: coalescence
STAR
experimental results

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Figures(0)

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