论文标题
在NA61/Shine中搜索关键效果
Search of critical effects in NA61/SHINE
论文作者
论文摘要
Na61/Shine是一项多功能实验，用于研究在Cern Super Proton Synchrotron（SPS）上研究强子蛋白，强子核和核核碰撞。该实验对强相互作用的物理学以及中微子和宇宙射线物理学的重要参考测量进行了独特的测量。 实验的主要目标是研究解解的发作和寻找强烈相互作用物质的临界点，以发现热量的机理并测试统计模型的有效性。为此，通过改变光束动量（13 $ a $ -158 $ a $ 〜gev/$ c $）和碰撞系统的大小（P+P，P+PB，BE+BE，AR+SC，ar+SC，XE+LA，PB+PB）来进行二维扫描。 在这一贡献中，我们介绍了最近的NA61/Shine结果，以寻找光谱和波动中的关键影响。我们认为中间碰撞系统的解解发爆发没有明确的指示。然而，来自光谱上的P+P相互作用的结果和反登录发作揭示了与过渡能的接近性行为的异常行为。在对顶部SPS能量中中等大小核的碰撞的波动分析中，未观察到临界点的明显信号。
NA61/SHINE is a multi-purpose experiment to study hadron-proton, hadron-nucleus and nucleus-nucleus collisions at the CERN Super Proton Synchrotron (SPS). The experiment performs unique measurements for the physics of strong interactions as well as important reference measurements for neutrino and cosmic-ray physics. The primary goals of the experiment are the study of the onset of deconfinement and the search for the critical point of the strongly interacting matter, to uncover the mechanism of thermalisation and to test the validity of statistical models. For this purpose, a two-dimensional scan was performed by varying the beam momentum (13$A$--158$A$~GeV/$c$) and the size of colliding systems (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La, Pb+Pb). In this contribution, we present recent NA61/SHINE results on the search for critical effects in spectra and fluctuations. We see no clear indication for the onset of deconfinement for intermediate colliding systems. Nevertheless, results from p+p interactions on spectra and onset of deconfinement reveal anomalous behaviour in proximity to transition energy. In fluctuation analysis of collisions of medium size nuclei at the top SPS energy, no prominent signal of critical point was observed.
