双重观测：同时校准两个喷注
Seeing Double: Calibrating Two Jets at Once
AI总结：
本文提出利用动量守恒引起的喷注间关联，通过拟合双喷注事例的$p_T$不对称性改进喷注能量校准，并在CMS模拟数据上实现3-5%的分辨率相对提升。
摘要：
喷注能量校准是LHC上许多测量和搜索的重要方面。目前，这些校准是按单个喷注逐一进行的，即不考虑同一事例中其他喷注的性质。在这项工作中，我们提出利用动量守恒在喷注之间引入的关联来改进喷注能量校准。通过在模拟中拟合双喷注事例的$p_T$不对称性，同时对$p_T$谱本身保持不可知，我们能够获得关联改进的最大似然估计。该方法使用来自CMS探测器的模拟喷注进行了演示，喷注能量分辨率获得了$3$-$5\%$的相对改进，相当于约35\%的平方和（quadrature）改进。
英文摘要：
Jet energy calibration is an important aspect of many measurements and searches at the LHC. Currently, these calibrations are performed on a per-jet basis, i.e. agnostic to the properties of other jets in the same event. In this work, we propose taking advantage of the correlations induced by momentum conservation between jets in order to improve their jet energy calibration. By fitting the $p_T$ asymmetry of dijet events in simulation, while remaining agnostic to the $p_T$ spectra themselves, we are able to obtain correlation-improved maximum likelihood estimates. This approach is demonstrated with simulated jets from the CMS Detector, yielding a $3$-$5\%$ relative improvement in the jet energy resolution, corresponding to a quadrature improvement of approximately 35\%.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
