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arXiv 0805.2245nucl-ex
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在CERN SPS上NA49的Pb+Pb中心碰撞涨落的能量依赖性

Energy dependence of fluctuations in central Pb+Pb collisions from NA49 at the CERN SPS

The NA49 Collaboration

摘要:

NA 49的最新结果的多重数和平均横向动量的波动分析的事件的基础上,提出了在整个SPS能量范围(20 A-158 A GeV)的中心Pb+Pb相互作用。多重性分布的标度方差随碰撞能量而减小,而$<p_T>$波动的$Φ_{p_{T}}$测量是小的并且与碰撞能量无关。因此,在中心Pb+Pb碰撞中,这些波动并不表明强相互作用物质的临界点。

英文摘要:

The latest NA49 results on fluctuations of multiplicity and average transverse-momentum analyzed on an event-by-event basis are presented for central Pb+Pb interactions over the whole SPS energy range (20A - 158A GeV). The scaled variance of the multiplicity distribution decreases with collision energy whereas the $Φ_{p_{T}}$ measure of $<p_T>$ fluctuations is small and independent of collision energy. Thus in central Pb+Pb collisions these fluctuations do not show an indication of the critical point of strongly interacting matter.

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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