Search for pair production of heavy vectorlike quarks decaying into hadronic final states in p p collisions at s = 13 TeV with the ATLAS detector
Search for pair production of heavy vectorlike quarks decaying into hadronic final states in p p collisions at s = 13 TeV with the ATLAS detector
复制标题
使用 ATLAS 探测器搜索在 s = 13 TeV 的 p p 碰撞中衰变成强子最终态的重矢量夸克的配对产生
DOI：
10.1103/physrevd.98.092005
复制
发表时间：
2018
影响因子：
5
通讯作者：
Aaboud M
中科院分区：
文献类型：
--
作者：
Aaboud M
提出了对重矢量夸克的配对产生的搜索，或者说，它们衰变成带有喷流且没有重建轻子的最终状态。使用深度神经网络将最终状态的喷流分类为强子衰变玻色子、希格斯玻色子、顶夸克或背景。该分析使用来自 ATLAS 实验的数据，该实验对应于大型强子对撞机在 2015 年和 2016 年提供的质心能量为 的质子-质子碰撞。没有观察到与标准模型预期的显着偏差。假设矢量夸克衰变成标准模型玻色子和第三代夸克，或者对于各种分支比，对结果进行解释。在 95% 的置信水平下，弱同位旋双峰 (,) 的类矢量夸克质量的观测（预期）下限为 950 (890) GeV，而纯衰变砂的质量下限（这些结果最强）分别为 1010 (970) GeV 和 1010 (1010) GeV。
A search is presented for the pair production of heavy vectorlike quarks,or, that decay into final states with jets and no reconstructed leptons. Jets in the final state are classified using a deep neural network as arising from hadronically decayingbosons, Higgs bosons, top quarks, or background. The analysis uses data from the ATLAS experiment corresponding toof proton-proton collisions with a center-of-mass energy ofdelivered by the Large Hadron Collider in 2015 and 2016. No significant deviation from the Standard Model expectation is observed. Results are interpreted assuming the vectorlike quarks decay into a Standard Model boson and a third-generation-quark,or, for a variety of branching ratios. At 95% confidence level, the observed (expected) lower limit on the vectorlike-quark mass for a weak-isospin doublet (,) is 950 (890) GeV, and the lower limits on the masses for the pure decaysand, where these results are strongest, are 1010 (970) GeV and 1010 (1010) GeV, respectively.