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Jet charge modification in finite QCD matter

机译：有限QCD物质的喷气电荷改变

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Jet production and jet substructure modification in heavy-ion collisions have played an essential role in revealing the in-medium evolution of parton showers and the determination of the properties of strongly interacting matter under extreme conditions. It is imperative to extend these studies to include flavor tagging and to devise observables that are sensitive to the partonic origin of jets. The average jet charge, defined as the momentum-weighted sum of the electric charges of particles inside the jet, is a proxy of the electric charge of the quark or gluon that initiates the jet. We demonstrate how the factorization framework of soft-collinear effective theory can be generalized to evaluate the jet charge in a dense strongly interacting matter environment, such as the one produced in nuclear reactions at collider energies. Observables that can separate the contribution of in-medium branching from the trivial isospin effects are identified, and their connection to established jet quenching effects is elucidated. We present predictions for the transverse momentum dependence of the jet charge distribution in nucleus-nucleus collisions and its modification relative to the proton case.
机译：重离子碰撞中的喷射生产和喷射子结构改性在揭示Parton淋浴的中型演进和在极端条件下的强烈相互作用的性能的测定中发挥了重要作用。必须扩展这些研究以包括风味标记，并设计对喷气机的局部局部起源敏感的可观察到。定义为射流内颗粒的电荷的电量的平均喷射电荷，是引发喷射器的夸克或胶的电荷的代理。我们展示了软链接有效理论的分解框架可以广泛地评估密集强烈相互作用环境中的喷射电荷，例如在碰撞器能量的核反应中产生的电荷。可以鉴定可以分离培养基分支的中型分支的可观察者，并阐明了与建立的喷射淬火效果的连接。我们向核 - 核碰撞中喷射电荷分布的横向动量依赖性的预测及其相对于质子壳体的改性。

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