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Antideuteron and antihelion production in root(s) = 130 GeV Au+Au collisions

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arxiv nucl-ex/0108022 v1 pith:XXOEVSDE submitted 2001-08-21 nucl-ex

Antideuteron and antihelion production in root(s) = 130 GeV Au+Au collisions

classification nucl-ex
keywords collisionsfreeze-outproductionvolumeantideuteronantihelionenergyanalyses
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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