Multiplicity fluctuations of identified hadrons in p+p interactions at SPS energies
Maja Maćkowiak-Pawłowska, Andrzej Wilczek
备注：
4 pages, 3 figures, Proceedings of the Strangeness in Quark Matter Conference (SQM 2013), 22nd - 27th July 2013, accepted by the Open Access Journal of Physics: Conference Series (JPCS), in the IOP conference series
研究已识别强子的能量和系统尺寸涨落是CERN SPS NA 61/SHINE的主要目标之一。结果可能允许发现强相互作用物质的临界点（CP），以及揭示解除禁闭（OD）的开始的属性。但是涨落表现出许多其他的来源，从最基本的，如体积效应和守恒定律开始。NA 49似乎观察到在顶部SPS能量的中等大小的核碰撞中与CP相关的波动。然而，这一结果将仍然是不确定的，直到系统的数据，能源和系统的大小依赖将可用。此外，p+p以及Pb+Pb相互作用的波动应该得到更好的理解。在这篇文章中，我们将介绍在CERN SPS能量下p+p相互作用中确定的强子的多重数涨落的结果。NA 61的数据将进行比较，从中央铅+铅碰撞NA 49在两个实验的共同接受区域的相应结果。此外，将测试两种反应的模型（EPOS、UrQMD和HSD）的预测。
英文摘要：
Study of energy and system size fluctuations of identified hadrons is one of the key goals of NA61/SHINE at the CERN SPS. Results may allow to discover the critical point (CP) of strongly interacting matter as well as to uncover properties of the onset of deconfinement (OD). But fluctuations exhibit numerous other sources starting from most basic ones like volume effects and conservation laws.
NA49 seems to observe fluctuations related to CP in collisions of medium size nuclei at top SPS energy. However, this result will remain inconclusive until systematic data on energy and system size dependence will be available. Moreover, fluctuations in p+p as well as in Pb+Pb interactions should be better understood.
In this contribution results on multiplicity fluctuations of identified hadrons in p+p interactions at the CERN SPS energies will be presented. The NA61 data will be compared with the corresponding results from central Pb+Pb collisions of NA49 in the common acceptance region of both experiments. Moreover, predictions of models (EPOS, UrQMD and HSD) for both reactions will be tested.
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