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arXiv 1012.4659nucl-ex
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SPS粒子产生的系统尺寸依赖性

System Size Dependence of Particle Production at the SPS

C. Blume

摘要:

本文讨论了最近在CERN SPS上测量的关于净重子和超子产生对系统尺寸依赖性的结果。所观察到的Npart依赖性的产量,但也动力学性质,如平均横动量,可以描述的核心电晕方法的上下文中。其他观测量,如反质子产额和前向速度下的净质子,并不遵循这个模型的预测。在QCD相图中寻找一个临界点的可能影响进行了讨论。事件的相对核心日冕源的贡献事件的波动可能会影响波动观测(例如多重性波动)。这种影响的大小进行了调查。

英文摘要:

Recent results on the system size dependence of net-baryon and hyperon production as measured at the CERN SPS are discussed. The observed Npart dependences of yields, but also of dynamical properties, such as average transverse momenta, can be described in the context of the core corona approach. Other observables, such as antiproton yields and net-protons at forward rapidities, do not follow the predictions of this model. Possible implications for a search for a critical point in the QCD phase diagram are discussed. Event-by-event fluctuations of the relative core to corona source contributions might influence fluctuation observables (e.g. multiplicity fluctuations). The magnitude of this effect is investigated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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