论文标题
LHC处的障碍型中的SHIPH型SMEFT效应
Shift-Type SMEFT Effects in Dileptons at the LHC
论文作者
论文摘要
我们探讨了可以从DILEPTON生产的标准模型有效现场理论中引入的威尔逊系数的约束，特别是包括对操作员的约束，这些限制不会导致相对于标准模型速率，即移动，而不会导致横截面随着能量而增长。我们在分析中将较高EFT顺序的基本理论误差估计纳入了，以提供强大的界限。我们发现，对确实会随着能量增长的四个特里米昂操作员的贡献的限制并没有通过包含这些转移而实质性地削弱，并且也可以得出对移位的限制，具有与LEP数据相当的特征强度与参数空间相当的特征强度，并且是从LEP数据互补的。这完成了对SMEFT中强调Quiet dilepton产生的研究，并提供了两个新的约束，它们与LHC在LHC产生的其他限制之间具有线性独立，并且在Wilson系数空间中也相对于LEP界限而在Wilson系数空间中旋转。
We explore the constraints which can be derived on Wilson coefficients in the Standard Model Effective Field Theory from dilepton production, notably including the constraints on operators which do not lead to cross sections growing with energy relative to the Standard Model rate, i.e. shifts. We incorporate essential theory error estimates from higher EFT orders in the analysis in order to provide robust bounds. We find that constraints on four-fermion operator contributions which do grow with energy are not materially weakened by the inclusion of these shifts, and that a constraint on the shifts can also be derived, with a characteristic strength comparable to, and a directionality in parameter space complementary to, those from LEP data. This completes the study of hadronically-quiet dilepton production in the SMEFT, and provides two new constraints which are linearly independent from others arising at the LHC and also rotated in Wilson coefficient space relative to, though not completely independent from, the LEP bounds.
