论文标题
在QCD等离子体中碰撞拓宽内核和中等诱导的辐射的非扰动测定
Non-perturbative determination of the collisional broadening kernel and medium-induced radiation in QCD plasmas
论文作者
论文摘要
QCD等离子体中的碰撞扩展导致培养基诱导的辐射的发射，该辐射控制着高能颗粒或JET的能量损失。虽然最近的研究通过晶格模拟了对QCD的长距离有效理论，静电QCD（EQCD）的长距离理论的晶格模拟对碰撞扩展的内核$ c（B_ \ bot）$的贡献，但到目前为止，所有现象学对喷射Quench的平衡均依赖于扰动性确定的速效性确定的速度确定。通过匹配晶格提取的eqCD扩展内核的短距离行为，我们可以非扰动地确定完全匹配的QCD扩展内核。我们为影响参数（$ c _ {\ rm qcd}（b_ \ bot）$）和动量空间（$ c _ {\ rm qCD}（q_ \ bot）$）提出了碰撞扩展内核的结果，并雇用它们以确定中等诱导的辐射速率在Infiation Infiation y in Infiation and Infinite and Firinite silite and Firinite splas＆有限的QCD QCD QCD。通过将我们的结果与文献中采用的分裂率的各种分裂率进行对比，我们研究了CQCD（$ q_ \ bot $）对中诱导的辐射率的非扰动确定的影响。
Collisional broadening in QCD plasmas leads to the emission of medium induced radiation, which governs the energy loss of highly energetic particles or jets. While recent studies have obtained non-perturbative contributions to the collisional broadening kernel $C(b_\bot)$ using lattice simulation of the dimensionally reduced long-distance effective theory of QCD, Electrostatic QCD (EQCD), so far all phenomenological calculations of jet quenching rely on perturbative determinations of the collisional broadening kernel. By matching the short-distance behavior of the lattice extracted EQCD broadening kernel, we determine the fully matched QCD broadening kernel non-perturbatively. We present results for the collisional broadening kernel in impact-parameter ($C_{\rm QCD}(b_\bot)$)) and momentum space ($C_{\rm QCD}(q_\bot)$) and employ them to determine the rates of medium induced radiation in infinite and finite size QCD plasmas. By contrasting our results with leading and next-to-leading order perturbative determinations as well as various approximations of the splitting rates employed in the literature, we investigate the effect of the non-peturbative determination of CQCD($q_\bot$) on medium-induced radiation rates.
