arXiv 1109.41852011-09-19hep-ph

用CHIMERA模拟夸克-胶子等离子体

Modeling Quark Gluon Plasma Using CHIMERA

Betty B. I. Abelev

备注：: Proceedings for the 27th Winter Workshop on Nuclear Dynamics (2011) in Winter Park, CO
发表信息：: J. Phys.: Conf. Ser. 316 012030, 2011
DOI：: 10.1088/1742-6596/316/1/012030

摘要：

本文将Glauber模型的初态条件与偏心率涨落、预平衡流、UVH 2 +1粘性流体力学、格点量子色动力学状态方程、修正的Cooper-Frye冻结和UrQMD强子级联相结合，模拟了重离子碰撞到最终强子气体态的夸克-胶子等离子体（QGP）演化.然后，我们使用一个全面的分析框架，连同所描述的模型，我们称之为CHIMERA的模型参数进行评估。在我们的框架内，初始状态参数，如初始温度（T $_{\mathrm{init}}$），存在或不存在的初始流，熵密度（$η$ /s）和不同的状态方程（EoS）的粘度，然后同时比较几个实验数据观测：HBT半径，粒子光谱和粒子流。然后，将每组初始参数与实验数据进行比较得到的$χ^2$ /nds值用于找到QGP的最佳描述，这些参数很难通过实验获得，但对于理解所产生的物质至关重要。

英文摘要：

We attempt to model Quark Gluon Plasma (QGP) evolution from the initial Heavy Ion collision to the final hadronic gas state by combining the Glauber model initial state conditions with eccentricity fluctuations, pre-equilibrium flow, UVH2+1 viscous hydrodynamics with lattice QCD Equation of State (EoS), a modified Cooper-Frye freeze-out and the UrQMD hadronic cascade. We then evaluate the model parameters using a comprehensive analytical framework which together with the described model we call CHIMERA. Within our framework, the initial state parameters, such as the initial temperature (T$_{\mathrm{init}}$), presence or absence of initial flow, viscosity over entropy density ($η$/s) and different Equations of State (EoS), are varied and then compared simultaneously to several experimental data observables: HBT radii, particle spectra and particle flow. $χ^2$/nds values from comparison to the experimental data for each set of initial parameters will then used to find the optimal description of the QGP with parameters that are difficult to obtain experimentally, but are crucial to understanding of the matter produced.

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。

摘要：

英文摘要：

相关论文