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arXiv 2302.02236hep-ph
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质子-核碰撞中由几何与量子涨落诱导的偏心率演化

Evolution of eccentricities induced by geometrical and quantum fluctuations in proton-nucleus collisions

S. Demirci, P. Guerrero-Rodríguez

AI总结:

本文解析计算了高能质子-核碰撞中由质子几何结构和颜色场量子涨落引起的初始方位角偏心率,并利用线性化 Yang-Mills 方程在自由场传播和稀疏-稠密极限下求解了这些偏心率随原时的演化。

摘要:

我们计算了高能质子-核碰撞在原时 $τ\geq 0^+$ 时由初始阶段涨落引起的方位角偏心率。我们考虑了两种涨落来源,即质子的几何结构以及质子和核携带的颜色场涨落。用高斯模型描述这些效应使我们能够解析计算能量密度的一点和两点关联函数,由此得到偏心率。我们通过将 Glasma 动力学用线性化 Yang-Mills 方程近似,并通过假设自由场传播和采用稀疏-稠密极限求解,计算了这些量的原时演化。

英文摘要:

We compute the azimuthal eccentricities arising from initial stage fluctuations in high energy proton-nucleus collisions at proper times $τ\geq 0^+$. We consider two sources of fluctuations, namely the geometrical structure of the proton and the fluctuation of color fields carried by both proton and nucleus. Describing these effects with Gaussian models allows us to analytically calculate the one- and two-point correlators of energy density, from which the eccentricities are obtained. We compute the proper time evolution of these quantities by approximating the Glasma dynamics in terms of linearized Yang-Mills equations, which we solve by assuming free field propagation and adopting the dilute-dense limit.

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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