Yang-Mills-Wong模拟中的射流演化
Jet evolution in Yang-Mills-Wong simulations
摘要：
本文通过实时求解格点上的Yang-Mills-Wong方程组，得到了热密非阿贝尔等离子体中高动量部分子的碰撞能量损失和动量展宽的结果。包括硬粒子之间的弹性碰撞，我们得到截断独立的碰撞能量损失dE/dx和传输系数q-hat的结果。后者被发现收到一个相当大的贡献，从幂律尾的横向动量分布的高动量部分子。我们进一步认为，不稳定性对射流加宽的影响，应通过实验时，采用椭圆形基地的射流锥或研究在完整的喷注重建方法的锥内的相关性。
英文摘要：
We present results for collisional energy loss and momentum broadening of high momentum partons in a hot and dense non-Abelian plasma obtained by solving the coupled system of Yang-Mills-Wong equations on a lattice in real time. Including hard elastic collisions among the particles we obtain cutoff independent results for the collisional energy loss dE/dx and the transport coefficient q-hat. The latter is found to receive a sizable contribution from a power-law tail in the transverse momentum distribution of high-momentum partons. We further argue that the effect of instabilities on jet broadening should be accessible by experiment when employing jet cones with elliptical bases or studying correlations within the cone in full jet reconstruction methods.
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