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arXiv 1502.05207hep-ex
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CMS中MET重建和堆积缓解技术的性能

Performance of MET reconstruction and pileup mitigation techniques in CMS

Saranya Ghosh

摘要:

缺失的横向动量重建算法的性能,提出了使用8 TeV pp碰撞数据收集的CMS检测器,对应于一个积分亮度的$12.2 \pm 0.5$ $\mathrm{fb^{-1}}$。缺失横向动量的规模和分辨率以及多重质子-质子相互作用(堆积)的影响是使用具有已识别Z玻色子或孤立光子的事件来测量的。它们一般都很好地描述了模拟。先进的失踪的横向动量重建算法也专门开发,以减轻大量的堆积相互作用的影响,失踪的横向动量分辨率。使用这些先进的算法,丢失的横向动量分辨率的依赖堆积相互作用显着减少。

英文摘要:

The performance of missing transverse momentum reconstruction algorithms is presented using 8 TeV pp collision data collected with the CMS detector, corresponding to an integrated luminosity of $12.2 \pm 0.5$ $\mathrm{fb^{-1}}$. The scale and resolution of missing transverse momentum and the effects of multiple proton-proton interactions (pileup), are measured using events with an identified Z boson or isolated photon. They are in general well described by the simulation. Advanced missing transverse momentum reconstruction algorithms are also developed specifically to mitigate the effects of large numbers of pileup interactions on missing transverse momentum resolution. Using these advanced algorithms, the dependence of the missing transverse momentum resolution on pileup interactions is reduced significantly.

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