标题： 稠密介质中喷注具有涌现尺度的因子化研究 显示英文标题

标题： Towards factorization with emergent scales for jets in dense media

摘要： 利用最近发展的开放量子系统有效场论框架，我们研究了电子-离子/重离子碰撞中稠密核介质中的喷注产生和演化。 我们确认，介质对喷注的频繁监控导致了一个扰动横动量标度的出现，通常称为饱和标度，这需要进一步因子化以完全隔离介质的非扰动物理。 本文通过在马尔可夫近似下提供介质中胶子展宽概率的算符定义，部分实现了这一目标。 我们表明，该分布是（半）普适的；它依赖于喷注的角度测量，并探测介质的大尺度和小尺度 $x$ 动力学。 我们进一步阐明了非扰动物理的所有其他贡献，表明非扰动物理的参数化比之前假设的更为复杂，并概述了实现喷注产生截面完全因子化的必要步骤。 显示英文摘要

摘要： Employing the recently developed open quantum system Effective Field Theory framework, we investigate jet production and evolution in a dense nuclear medium in electron-ion/heavy-ion collisions. We confirm that the frequent monitoring of the jet by the medium leads to the emergence of a perturbative transverse momentum scale, often referred to as the saturation scale that necessitates further factorization to completely isolate the non-perturbative physics of the medium. A part of this goal is achieved in this paper by providing an operator definition for the broadening probability of a gluon in the medium within the Markovian approximations. We show that this distribution is (semi)universal; it depends on the angular measurement on the jet and probes both the large and small $x$ dynamics of the medium. We further elucidate all other contributions to non-perturbative physics suggesting that the parameterization of non-perturbative physics is more complex than previously assumed and outline steps required for a complete factorization of the jet production cross section.