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首页> 外文期刊>The European Physical Journal, A. Hadrons and Nuclei >Massive neutral gauge boson production as a probe of nuclear modifications of parton distributions at the LHC
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Massive neutral gauge boson production as a probe of nuclear modifications of parton distributions at the LHC

机译:大规模中性规子玻色子生产,作为对大型强子对撞机parton分布的核修饰的探索

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摘要

We analyze the role of nuclear modifications of parton distributions, notably, the nuclear shadowing and antishadowing corrections, in the production of lepton pairs from decays of neutral Z and γ? gauge bosons in proton-lead and lead-lead collisions at the LHC. Using the Collins-Soper-Sterman resummation formalism that we extended to the case of nuclear parton distributions, we observed a direct correlation between the predicted behavior of the transverse momentum and rapidity distributions of the produced vector bosons and the pattern of quark and gluon nuclear modifications. This makes the production of Z/γ? in pA and AA collisions at the LHC a useful tool for constraining nuclear PDFs in the small-x shadowing and moderate-x antishadowing regions.
机译:我们分析了中性Z和γ衰变产生轻子对时,parton分布的核修饰作用,特别是核阴影和反阴影校正的作用。在大型强子对撞机中质子-铅和铅-铅碰撞中测量玻色子。使用我们扩展到核parton分布的情况的Collins-Soper-Sterman恢复形式主义,我们观察到了产生的矢量玻色子的横向动量和快速分布的预测行为与夸克和胶子核修饰的模式之间的直接关系。这使得产生Z /γ?在大型强子对撞机的pA和AA碰撞中,这是一个有用的工具,可以在小x阴影和中x防阴影区域约束核PDF。

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