Subjet distributions in deep inelastic scattering at HERA
Subjet distributions in deep inelastic scattering at HERA
复制标题
HERA 深层非弹性散射的主体分布
DOI：
10.1140/epjc/s10052-009-1090-3
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Chekanov S
中科院分区：
文献类型：
--
作者：
Chekanov S
使用 HERA 的 ZEUS 探测器，使用 81.7 pb−1 的积分光度，在中性电流深层非弹性电子散射中测量了主体射流分布。在实验室框架中使用 kTcluster 算法识别喷流。主题被定义为通过在较小的分辨率参数值下重新应用聚类算法来识别的类似喷射的子结构。具有恰好两个主题的射流的主题射流分布的测量被呈现为对部分子辐射图案以及初始状态和最终状态之间的颜色相干性敏感的可观测量的函数。微扰 QCD 预测给出了数据的充分描述。
Subjet distributions were measured in neutral current deep inelasticepscattering with the ZEUS detector at HERA using an integrated luminosity of 81.7 pb−1. Jets were identified using thekTcluster algorithm in the laboratory frame. Subjets were defined as jet-like substructures identified by a reapplication of the cluster algorithm at a smaller value of the resolution parameter. Measurements of subjet distributions for jets with exactly two subjets forare presented as functions of observables sensitive to the pattern of parton radiation and to the colour coherence between the initial and final states. Perturbative QCD predictions give an adequate description of the data.