论文标题
CERN SPS能量范围内的陌生产生的系统大小依赖性的结果从Na61/Shine
Results on system size dependence of strangeness production in the CERN SPS energy range from NA61/SHINE
论文作者
论文摘要
Na61/Shine是Cern Super Proton Synchrotron上的多用途固定目标设施。 NA61/Shine强烈互动计划的主要目标是发现强烈相互作用的物质的关键点并研究脱浓的发作的特性。为了实现这些目标，通过改变碰撞能量和系统大小，以二维扫描的形式进行强子生产测量。该协作最近完成了其有关强烈互动的原始计划的数据获取，在SPS Energy系列的各种系统中积累了有关强子生产的广泛数据样本。介绍了GEV）。小型和中间质量离子碰撞的NA61/SHINE测量值建立了有趣的系统尺寸依赖性，显示了从BE+BE be be be aR+scy系统开始的强子生产属性的迅速变化。特别是，AR+SC是最小的系统，相对于$ p $+$ p $碰撞，$ k^+/π^+$比率的显着增强。将测得的带电强子多重性的能量和系统尺寸依赖性与可用的世界数据和各种理论模型进行了比较。
NA61/SHINE is a multipurpose fixed-target facility at the CERN Super Proton Synchrotron. The main goals of the NA61/SHINE strong interactions program are to discover the critical point of strongly interacting matter and study the properties of the onset of deconfinement. To reach these goals, hadron production measurements are performed in the form of a two-dimensional scan by varying collision energy and system size. The Collaboration has recently finished data acquisition for its original program on strong interactions, accumulating broad data samples on hadron production in various systems in the SPS energy range.\\ In this contribution, the NA61/SHINE results on identified charged kaon and pion production in p+p, Be+Be and Ar+Sc collisions at the SPS energy range ($\sqrt{s_{NN}}$=5.1--17.3 GeV) are presented. The NA61/SHINE measurements of small and intermediate-mass ion collisions establish an interesting system size dependence, showing a rapid change of hadron production properties that starts when moving from Be+Be to Ar+Sc system. In particular, Ar+Sc is the smallest system for which a significant enhancement of $K^+/π^+$ ratio with respect to $p$+$p$ collisions is observed. Obtained energy and system size dependence of the measured charged hadron multiplicities are compared with available world data and various theoretical models.
