恒等式方法--研究化学涨落的新工具
Identity method - a new tool for studying chemical fluctuations
摘要：
在核碰撞中产生的强子系统的化学成分的事件的事件的波动被认为是敏感的约束和解除约束强相互作用的物质之间的过渡的属性。本文介绍了一种研究化学涨落的新方法--恒等法，并讨论了它的特点。用CERN SPS的NA 49实验记录的40 $A$ ~GeV的中心Pb-Pb碰撞数据对该方法进行了检验。
英文摘要：
Event-by-event fluctuations of the chemical composition of the hadronic system produced in nuclear collisions are believed to be sensitive to properties of the transition between confined and deconfined strongly interacting matter. In this paper a new technique for the study of chemical fluctuation, the identity method, is introduced and its features are discussed. The method is tested using data on central Pb-Pb collisions at 40$A$~GeV registered by the NA49 experiment at the CERN SPS.
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