论文标题
核变形对相对论U+U碰撞中集体流量可观察物的影响
Impact of nuclear deformation on collective flow observables in relativistic U+U collisions
论文作者
论文摘要
多相传输（AMPT）模型用于研究几种流动观测值的功效，以约束U $+$ u碰撞中铀核的初始状态变形。多颗粒方位角累积方法用于研究（i）一组对初始和最终效应敏感的数量的敏感性，以及（ii）一组对初始状态效应对铀核核核核酸核酸核酸四倍体形状更敏感的无尺寸量。我们发现，流动谐波，流动波动和相关性，与四边形流量谐调的线性和非线性流动相关性的综合使用以及椭圆流与均匀扭转动量之间的相关性可能会限制铀核的核变形。因此，通过数据模型比较，一组综合的测量可以为四极形变形提供量化工具。
A Multi-Phase Transport (AMPT) model is used to investigate the efficacy of several flow observables to constrain the initial-state deformation of the Uranium nuclei in U$+$U collisions at nucleon-nucleon center-of-mass energy $\sqrt{\textit{s}_{NN}}$ = 193 GeV. The multiparticle azimuthal cumulant method is used to investigate the sensitivity of (I) a set of quantities that are sensitive to both initial- and final-state effects as well as (II) a set of dimensionless quantities that are more sensitive to initial-state effects to the Uranium nuclei quadrupole shape deformation. We find that the combined use of the flow harmonics, flow fluctuations and correlations, linear and non-linear flow correlations to the quadrangular flow harmonic, and the correlations between elliptic flow and the mean-transverse momentum could serve to constrain the nuclear deformation of the Uranium nuclei. Therefore, a comprehensive set of measurements of such observables can provide a quantifying tool for the quadrupole shape deformation via data-model comparisons.
