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Aspects of Relativistic Heavy-Ion Collisions
Universe ( IF 2.9 ) Pub Date : 2020-04-30 , DOI: 10.3390/universe6050061
Georg Wolschin

The rapid thermalization of quarks and gluons in the initial stages of relativistic heavy-ion collisions is treated using analytic solutions of a nonlinear diffusion equation with schematic initial conditions, and for gluons with boundary conditions at the singularity. On a similarly short time scale of t 1 fm/c, the stopping of baryons is accounted for through a QCD-inspired approach based on the parton distribution functions of valence quarks, and gluons. Charged-hadron production is considered phenomenologically using a linear relativistic diffusion model with two fragmentation sources, and a central gluonic source that rises with ln 3 ( s N N ) . The limiting-fragmentation conjecture that agrees with data at energies reached at the Relativistic Heavy-Ion Collider (RHIC) energies is found to be consistent with Large Hadron Collider (LHC) data for Pb-Pb at s N N = 2 . 76 and 5 . 02 TeV. Quarkonia are used as hard probes for the properties of the quark-gluon plasma (QGP) through a comparison of theoretical predictions with recent CMS, ALICE and LHCb data for Pb-Pb and p-Pb collisions.

中文翻译:

相对论重离子碰撞的各个方面

相对论重离子碰撞初期夸克和胶子的快速热化,使用具有初始状态示意图的非线性扩散方程的解析解,以及对于边界条件为奇数的胶子,进行了解析。在类似的短时间内 Ť 1个 fm / c,通过基于价夸克和胶子的parton分布函数的QCD启发方法,对重子进行了阻止。使用线性相对论扩散模型,从现象学上考虑带电强子的产生,该模型具有两个碎片源,一个中心胶质子源随 ln 3 s ñ ñ 。极限碎片猜想与相对论重离子对撞机(RHIC)能量所达到的能量数据一致,被发现与Pb-Pb的大强子对撞机(LHC)数据一致。 s ñ ñ = 2 76 5 02 TeV。通过将理论预测值与最近的CMS,ALICE和LHCb数据对Pb-Pb和p-Pb碰撞的比较,将Quarkonia用作夸克-胶子等离子体(QGP)性质的硬探针。
更新日期:2020-04-30
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