Measurements of top-quark pair single- and double-differential cross-sections in the all-hadronic channel in pp collisions at $$ \sqrt{\mathrm{s}} $$ = 13 TeV using the ATLAS detector
Measurements of top-quark pair single- and double-differential cross-sections in the all-hadronic channel in pp collisions at $$ \sqrt{\mathrm{s}} $$ = 13 TeV using the ATLAS detector
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DOI：
10.1007/jhep01(2021)033
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发表时间：
2021-01
影响因子：
5.4
通讯作者：
G. Aad;B. Abbott;D. Abbott;A. A. Abud-A.;K. Abeling;D. K. Abhayasinghe;S. H. Abidi;O. AbouZeid-
中科院分区：
文献类型：
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作者：
G. Aad;B. Abbott;D. Abbott;A. A. Abud-A.;K. Abeling;D. K. Abhayasinghe;S. H. Abidi;O. AbouZeid-
利用大型强子对撞机ATLAS探测器在= 13 TeV处收集的数据，测量了质子-质子碰撞中大动量转移的事件形状变量。在包含的多喷流事件中，使用对应于139 fb− 1的积分光度的数据，研究了使用强子喷流计算的六个事件形状变量。测量中进行的垃圾箱的射流多重性和在不同范围内的标量和的横向动量的两个领先的射流，达到规模超过2 TeV。这些测量结果进行了比较，从Monte Carlo事件发生器包含领先的顺序或下一个领先的顺序矩阵元素匹配到部分子阵雨模拟到领先的对数精度的预测。在低喷流多重性，形状之间的差异的测量和Monte Carlo预测观察。在高射流多重性，形状更好地描述，但观察到的归一化的差异。
A measurement of event-shape variables in proton-proton collisions at large momentum transfer is presented using data collected at= 13 TeV with the ATLAS detector at the Large Hadron Collider. Six event-shape variables calculated using hadronic jets are studied in inclusive multijet events using data corresponding to an integrated luminosity of 139 fb− 1. Measurements are performed in bins of jet multiplicity and in different ranges of the scalar sum of the transverse momenta of the two leading jets, reaching scales beyond 2 TeV. These measurements are compared with predictions from Monte Carlo event generators containing leading-order or next-to-leading order matrix elements matched to parton showers simulated to leading-logarithm accuracy. At low jet multiplicities, shape discrepancies between the measurements and the Monte Carlo predictions are observed. At high jet multiplicities, the shapes are better described but discrepancies in the normalisation are observed.