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University of Frankfurt, Frankfurt, Germany.
Phys Rev Lett. 2001 Dec 24;87(26):262302. doi: 10.1103/PhysRevLett.87.262302. Epub 2001 Dec 7.
We report the first measurement of inclusive antiproton production at midrapidity in Au+Au collisions at square root of s(NN) = 130 GeV by the STAR experiment at RHIC. The antiproton transverse mass distributions in the measured transverse momentum range of 0.25<p( perpendicular)<0.95 GeV/c are found to fall less steeply for more central collisions. The extrapolated antiproton rapidity density is found to scale approximately with the negative hadron multiplicity density.
我们报告了相对论重离子对撞机（RHIC）上的STAR实验在质心能量平方根√s(NN)=130 GeV的金离子与金离子碰撞中，对中快度处的非单举反质子产生的首次测量。在测量的横向动量范围0.25<p⊥<0.95 GeV/c内，发现对于更中心的碰撞，反质子横向质量分布下降得没那么陡。外推得到的反质子快度密度被发现大致与负强子多重性密度成比例。
