大型强子对撞机（LHC）上Z玻色子+喷注产生中的角关联与极化
Angular correlations and polarization in $Z$+jet production at the LHC
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中文总结 AI 辅助
本研究针对LHC的精确QCD研究需求，以Z+喷注产生为对象，重求和高能对数并结合NLO固定阶信息，开发预测策略，将Z+喷注确立为高能QCD动力学的精确探针。
中文摘要 AI 辅助
大型强子对撞机（LHC）的精确研究日益需要对超出固定阶微扰理论的量子色动力学（QCD）辐射进行理论控制，特别是在快度大分离的末态中。高能对数即使对于电弱标度可观测量也会产生百分之十量级的修正，这在希格斯玻色子产生中已被观测到，推动将其系统纳入精确分析。我们通过Drell-Yan加喷注产生研究该能区，特别关注Z玻色子末态及其角分布和极化结构。高能对数在次领头对数精度下被重求和，并与次领头阶（NLO）固定阶信息一致结合。除 inclusive 快度和横动量谱外，该框架还解析了过程的方位角谐波内容，其模式因从领头阶到次领头阶发射动力学的转变而发生改变。我们进一步开发JETHAD-DYnamis-POWHEG策略以实现现实的轻子级预测，保留自旋关联、衰变角信息及实验可及的运动学。该方案确立了Z+喷注产生作为Run 3和高亮度LHC（HL-LHC）中高能QCD动力学的精确探针。
英文摘要
Precision studies at the LHC increasingly require theoretical control over QCD radiation beyond fixed-order perturbation theory, particularly in final states characterised by large separations in rapidity. High-energy logarithms can generate corrections at the ten-percent level even for electroweak-scale observables, as recently observed in Higgs production, motivating their systematic inclusion in precision analyses. We investigate this regime through Drell$-$Yan plus jet production, with particular emphasis on $Z$-boson final states and their angular and polarisation structure. High-energy logarithms are resummed at next-to-leading logarithmic accuracy and consistently combined with NLO fixed-order information. Beyond inclusive rapidity and transverse-momentum spectra, the framework resolves the azimuthal harmonic content of the process, whose pattern is reshaped by the transition from leading- to next-to-leading-order emission dynamics. We further develop the JETHAD$-$DYnamis$-$POWHEG strategy towards realistic lepton-level predictions, retaining spin correlations, decay-angle information, and experimentally accessible kinematics. This programme establishes $Z$+jet production as a precision probe of high-energy QCD dynamics for Run~3 and the HL-LHC.
