arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1009.3091nucl-th
收藏

重离子碰撞中的双轻子流和退禁闭相变

Dilepton flow and deconfinement phase transition in heavy ion collisions

Jian Deng, Qun Wang, Nu Xu, Pengfei Zhuang

摘要:

本文研究了\sqrt{s_{NN}} =200 GeV的Au+Au碰撞中的双轻子径向流。火球的时空演化由2+1维理想流体力学和各种状态方程描述。部分子相和强子相的横动量谱的斜率参数具有明显的特征,并对状态方程参数敏感。本文还研究了两相的椭圆流和M_T标度破缺现象,它们具有明显的特征。这些特征可以作为超相对论性重离子碰撞中夸克-胶子等离子体形成的清晰信号。

英文摘要:

The dilepton radial flow in Au+Au collisions at \sqrt{s_{NN}}=200 GeV is investigated. The space-time evolution of the fireball is described by a 2+1 dimensional ideal hydrodynamics with a variety of equations of state. The slope parameters of the transverse momentum spectra from the partonic and hadronic phases show distinct features and are sensitive to equation of state parameters. The elliptic flow and breaking of M_T scaling are also studied and have distinct features for the two phases. These features can serve as clean signals for the formation of a quark-gluon plasma in ultra-relativistic heavy ion collisions.

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。

↑