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arXiv 1309.7878nucl-thhep-phnucl-ex
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横动量和粒子数涨落的强强度测度

Strongly Intensive Measures for Transverse Momentum and Particle Number Fluctuations

Mark I. Gorenstein, Katarzyna Grebieszkow

摘要:

利用强强度测度$Δ[P_T,N]$和$Σ[P_T,N]$研究了核-核碰撞中横动量$P_T$和粒子多重数$N$的逐事件涨落.这些波动测量的特殊归一化确保它们是无量纲的,并产生波动的定量比较所需的共同尺度。在本文中的$Δ[P_T, N]$和$Σ[P_T, N]$措施的基本属性进行了测试,在不同的唯象模型,使用蒙特卡罗模拟(所谓的快速发电机)和解析解。所得结果有助于阐明$Δ[P_T,N]$和$Σ[P_T,N]$测度的性质.

英文摘要:

The strongly intensive measures $Δ[P_T,N]$ and $Σ[P_T,N]$ are used to study the event-by-event fluctuations of the transverse momentum $P_T$ and particle multiplicity $N$ in nucleus-nucleus collisions. A special normalization for these fluctuation measures ensures that they are dimensionless and yields a common scale required for a quantitative comparison of fluctuations. In this paper basic properties of the $Δ[P_T, N]$ and $Σ[P_T, N]$ measures are tested within different phenomenological models using the Monte Carlo simulations (the so-called fast generators) and analytical solutions. The obtained results are helpful to elucidate the properties of $Δ[P_T,N]$ and $Σ[P_T,N]$ measures.

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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