论文标题
中等诱导的QCD级联
Medium induced QCD cascades: broadening and rescattering during branching
论文作者
论文摘要
我们研究了通过夸克 - 格鲁恩等离子体（QGP）描述喷气繁殖的进化方程。特别是我们研究了分支过程中动量转移的贡献，并发现这种贡献很大。此外，我们研究了各种近似值，例如高斯近似值和对喷射室的扩散近似。我们注意到，为了重现BDIM方程（没有分支中的动量转移），扩散近似需要很大的Quenching参数$ \ hat Q $。
We study evolution equations describing jet propagation through quark--gluon plasma (QGP). In particular we investigate the contribution of momentum transfer during branching and find that such a contribution is sizeable. Furthermore, we study various approximations, such as the Gaussian approximation and the diffusive approximation to the jet-broadening term. We notice that in order to reproduce the BDIM equation (without the momentum transfer in the branching) the diffusive approximation requires a very large value of the jet-quenching parameter $\hat q$.
