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arXiv 1012.3950nucl-th
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硬探针的逐事件射流猝灭和高阶傅里叶矩

Event-by-Event Jet Quenching and Higher Fourier Moments of Hard Probes

Rainer J. Fries, Ricardo Rodriguez

摘要:

我们研究了高能核碰撞中产生的火球的逐事件涨落对硬探测观测值的影响。我们表明,空间不均匀性导致的变化,在核抑制因子的高动量强子,可以吸收在淬火强度q。这可能会增加q提取值的理论不确定性高达50%。我们还研究了方位角不对称性v2和双强子关联函数的影响。后者显示了一个有前途的残留信号的事件的事件淬火,可能使我们能够估计的空间不均匀性的大小在火球从实验数据。

英文摘要:

We investigate the effect of event-by-event fluctuations of the fireball created in high energy nuclear collisions on hard probe observables. We show that spatial inhomogeneities lead to changes in the nuclear suppression factor of high momentum hadrons which can be absorbed in the quenching strength q. This can increase the theoretical uncertainty on extracted values of q by up to 50%. We also investigate effects on azimuthal asymmetries v2 and dihadron correlation functions. The latter show a promising residual signal of event-by-event quenching that might allow us to estimate the size of spatial inhomogeneities in the fireball from experimental data.

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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