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arXiv 1704.04486nucl-thnucl-ex
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小的和大的夸克-胶子等离子体液滴中的流动:核子子结构的作用

Flow in small and large quark-gluon plasma droplets: the role of nucleon substructure

J. Scott Moreland, Jonah E. Bernhard, Weiyao Ke, Steffen A. Bass

摘要:

本文用贝叶斯方法研究了核子子结构对LHC质子-铅碰撞体观测量的影响。子结构被添加到TRENTO参数初始条件模型使用高斯核子与高斯部分子的数量可变。我们改变这些部分子的数量和宽度,同时恢复所需的非弹性质子-质子截面和系综平均质子密度。然后,我们运行的模型,通过大量的最小偏差流体动力学模拟和测量的最终粒子生产和方位角粒子相关性的初始状态属性的响应。一旦这些响应函数被确定,我们使用建立贝叶斯方法校准模型的自由参数。我们评论的部分子模型描述小系统中的流体动力学行为的隐含的可行性。

英文摘要:

We study the effects of nucleon substructure on bulk observables in proton-lead collisions at the LHC using Bayesian methodology. Substructure is added to the TRENTO parametric initial condition model using Gaussian nucleons with a variable number of Gaussian partons. We vary the number and width of these partons while recovering the desired inelastic proton-proton cross section and ensemble averaged proton density. We then run the model through a large number of minimum bias hydrodynamic simulations and measure the response of final particle production and azimuthal particle correlations to initial state properties. Once these response functions are determined, we calibrate free parameters of the model using established Bayesian methodology. We comment on the implied viability of the partonic model for describing hydrodynamic behavior in small systems.

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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