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arXiv 1407.8329nucl-th
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波动初始条件下LHC处的热光子$v_3$

Thermal photon $v_3$ at LHC from fluctuating initial conditions

Rupa Chatterjee, Dinesh K. Srivastava, Thorsten Renk

摘要:

本文用涨落初始条件的逐事件流体动力学模型计算了LHC中Pb核0- 40\ %中心碰撞的热光子三角流参数$v_3$。与热光子的椭圆流参数$v_2$相比,热光子$v_3$相对于参与者平面角被发现是正的并且是显著的。此外,作为$p_T$的函数的光子$v_3$在$1< p_T <6$ GeV/ $c$区域中显示出与光子$v_2$相似的定性性质。我们认为,虽然$v_3$起源于$ε_3$变形的初始状态密度分布,快速建立的径向流由于波动是所观察到的大值的主要驱动机制。

英文摘要:

We calculate the triangular flow parameter $v_3$ of thermal photons for 0--40\% central collisions of Pb nuclei at LHC using an event-by-event hydrodynamic model with fluctuating initial conditions. Thermal photon $v_3$ with respect to the the participant plane angle is found to be positive and significant compared to the elliptic flow parameter $v_2$ of thermal photons. In addition, photon $v_3$ as a function of $p_T$ shows similar qualitative nature to photon $v_2$ in the region $1< p_T <6$ GeV/$c$. We argue that while $v_3$ originates from $ε_3$ deformations of the initial state density distribution, fast buildup of radial flow due to fluctuations is the main driving mechanism for the observed large value.

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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