论文标题
在存在重叠的质子 - 蛋白质相互作用的情况下，CMS电磁量热仪中信号振幅的重建
Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions
论文作者
论文摘要
描述了一种用于重建由CMS电磁热量计的铅钨晶体产生的信号幅度的模板拟合技术。这种新颖的方法旨在抑制在LHC运行2开始时，加速器束间距从50 ns降低到25 ns之后，对信号的耗尽贡献增加。该算法的执行足够快，可以在CMS高级触发器中使用它。它也用于离线事件重建。从模拟和运行2碰撞数据获得的结果（2015-2018）表明，在从几个GEV延伸到数十GEV的一系列能量范围内，热量计的能量分辨率有了很大的改善。
A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the increased out-of-time pileup contribution to the signal following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015-2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.
