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首页> 外文期刊>Physical review, C >Bulk properties of the system formed in Au plus Au collisions at root S-NN=14.5 GeV at the BNL STAR detector
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Bulk properties of the system formed in Au plus Au collisions at root S-NN=14.5 GeV at the BNL STAR detector

机译：在BNL星探测器的Root S-NN = 14.5 GEV处形成的系统的批量性质

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摘要

We report systematic measurements of bulk properties of the system created in Au + Au collisions at root S-NN = 14.5 GeV recorded by the STAR detector at the Relativistic Heavy Ion Collider (RHIC). The transverse momentum spectra of pi(+/-), K-+/-, and p((p) over bar) are studied at midrapidity (vertical bar y vertical bar < 0.1) for nine centrality intervals. The centrality, transverse momentum (p(T)), and pseudorapidity (eta) dependence of inclusive charged particle elliptic flow (v(2)), and rapidity-odd charged particles directed flow (v(1)) results near midrapidity are also presented. These measurements are compared with the published results from Au + Au collisions at other energies, and from Pb Pb collisions at root S-NN = 2.76 TeV. The results at root S-NN = 14.5 GeV show similar behavior as established at other energies and fit well in the energy dependence trend. These results are important as the 14.5-GeV energy fills the gap in mu(B), which is of the order of 100 MeV, between root S-NN = 11.5 and 19.6 GeV. Comparisons of the data with UrQMD and AMPT models show poor agreement in general.
机译：我们报告系统地测量在Root S-NN = 14.5 GEV的Au + Au碰撞中创建的系统的批量性质进行了系统的批量性质，由星形探测器在相对论的重离子撞机（RHIC）上记录的STAR S-NN = 14.5 GEV。在氮磷（垂直条Y垂直条<0.1）下，研究了PI（+/-），K - + / - / - 和P（（P）上的P（P））的横向动量谱，用于九个中心间隔。偶联的带电粒子椭圆流（V（2））的中心，横向动量（P（t））和伪发射（ETA）依赖性，以及在中溴磷附近的速率（V（1））结果提出了。将这些测量与其他能量的Au + Au碰撞的发布结果进行比较，并且从根S-Nn = 2.76 Tev的Pb Pb碰撞中。 Root S-NN = 14.5 GEV的结果显示了与其他能量建立的类似行为，并在能量依赖趋势中适应。这些结果很重要，因为14.5-GEV能量填充MU（B）的间隙，该间隙为100 meV，根部S-NN = 11.5和19.6 GEV之间。与URQMD和AMPT模型的数据的比较显示了较差的一致性。

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