论文标题
用Atlas检测器在顶型生产中充电不对称性
Charge asymmetry in top-pair production with the ATLAS detector
论文作者
论文摘要
使用全部运行的2个数据在Atlas检测器收集的$ 13 $ TEV的质子中心能量中，对包容性和差异的顶级电荷不对称性进行测量。单级和Dilepton $ t \ bar {t} $衰减通道已合并。使用完全贝叶斯的展开消除了检测器效应。在DILEPTON衰变通道中，确定松性电荷不对称性。将测量结果与标准模型预测进行了比较。观察到零电荷 - 对称假设的过量不对称性在$ 4.7 $ $的标准偏差的水平上。
Measurement of the inclusive and differential top-quark charge asymmetry is carried out using full Run 2 data from proton-proton collisions at a center-of-mass energy of $13$ TeV collected by the ATLAS detector. The single-lepton and dilepton $t\bar{t}$ decay channels are combined. Distorting detector effects are removed using fully Bayesian unfolding. In the dilepton decay channel, the leptonic charge asymmetry is determined. Results from the measurements are compared with the Standard Model prediction. The excess of charge asymmetry from zero charge-asymmetry hypothesis at the level of $4.7$ standard deviations is observed.
