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

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

2001-08-21

arxiv.org/abs/nucl-ex/0108022v1

Phys.Rev.Lett.87:262301,2001; Erratum-ibid.87:279902,2001

Physics

Nuclear Physics

Nuclear Experiment

Submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.87.262301

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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