We perform a comprehensive study of partonic energy loss reflected in the nuclear modification factors of charged particles and jets measured in PbPb collisions at ##IMG## [http://ej.iop.org/images/0954-3899/47/12/125103/gabb58aieqn1.gif] {$\sqrt{{s}_{\text{NN}}}$} = 2.76 and 5.02 TeV in wide transverse momentum ( p T ) and centrality range. The p T distributions in pp collisions are fitted with a modified power law and the nuclear modification factor in PbPb collisions can be obtained using effective shift (Δ p T ) in the spectrum measured at different centralities. Driven by physics consideration, the functional form of energy loss given by Δ p T can be assumed as power law with different power indices in three different p T regions. The power indices and the boundaries of three p T regions are obtained by fitting the measured nuclear modification factor...

中文翻译：

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了解LHC能量下PbPb碰撞中测得的带电轻粒子和射流的部分能量损失

我们对在## IMG ## [http://ej.iop.org/images/0954-3899/47/12的PbPb碰撞中测得的带电粒子和射流的核修饰因子中反映的部分能量损失进行了全面研究。 /125103/gabb58aieqn1.gif] {$ \ sqrt {{s} _ {\ text {NN}}} $} = 2.76和5.02 TeV，在宽的横向动量（p T）和中心范围内。pp碰撞中的p T分布符合修正的幂定律，而PbPb碰撞中的核修饰因子可以使用在不同中心点测得的光谱中的有效位移（Δp T）来获得。出于物理考虑，可以将由Δp T给出的能量损耗的函数形式假定为在三个不同的p T区域中具有不同功率指数的幂律。