Wang E, Wang X N
Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China.
Phys Rev Lett. 2001 Oct 1;87(14):142301. doi: 10.1103/PhysRevLett.87.142301. Epub 2001 Sep 14.
Stimulated gluon emission and thermal absorption, in addition to induced radiation, are considered for an energetic parton propagating inside a quark-gluon plasma. In the presence of thermal gluons, stimulated emission reduces, while absorption increases, the parton's energy. The net effect is a reduction of the parton energy loss. Though decreasing asymptotically as T/E with the parton energy, the relative reduction is found to be important for intermediate energies. The modified energy dependence of the energy loss will affect the shape of suppression of moderately high p(T) hadrons due to jet quenching in high-energy heavy-ion collisions.
对于在夸克-胶子等离子体中传播的高能部分子，除了感应辐射外，还考虑了受激胶子发射和热吸收。在存在热胶子的情况下，受激发射会降低部分子的能量，而吸收会增加部分子的能量。净效应是部分子能量损失的减少。尽管随着部分子能量以T/E渐近减小，但发现相对减少对于中等能量来说是重要的。能量损失的修正能量依赖性将影响高能重离子碰撞中由于喷注淬火导致的中等高p(T)强子抑制的形状。
