arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.05958hep-phnucl-th
收藏

重离子碰撞中的喷流结构

Jet Structure in Heavy Ion Collisions

Jean-Paul Blaizot, Yacine Mehtar-Tani

摘要:

本文综述了超相对论重离子碰撞中产生的喷流结构的理论研究进展。本文重点讨论了快部分子通过夸克-胶子等离子体时所引起的部分子级联的动力学。我们回顾了介质感应辐射的基本机制,强调了相干效应的迅速消失,以及随后介质感应级联的概率性质。我们讨论了如何大的辐射修正修改的胶子级联的经典图片,以及如何这些可以被吸收在重整化的喷流淬火参数$\hat q $。然后,我们分析了能量沿介质诱导叶栅的(波)-湍流输运,指出了这种叶栅角结构的主要特征。最后讨论了锥内喷流结构的颜色退相干。与现象学的适度接触是接近尾声的审查。

英文摘要:

We review recent theoretical developments in the study of the structure of jets that are produced in ultra relativistic heavy ion collisions. The core of the review focusses on the dynamics of the parton cascade that is induced by the interactions of a fast parton crossing a quark-gluon plasma. We recall the basic mechanisms responsible for medium induced radiation, underline the rapid disappearance of coherence effects, and the ensuing probabilistic nature of the medium induced cascade. We discuss how large radiative corrections modify the classical picture of the gluon cascade, and how these can be absorbed in a renormalization of the jet quenching parameter $\hat q $. Then, we analyze the (wave)-turbulent transport of energy along the medium induced cascade, and point out the main characteristics of the angular structure of such a cascade. Finally, color decoherence of the in-cone jet structure is discussed. Modest contact with phenomenology is presented towards the end of the review.

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。

↑