Performance of the CMS missing transverse momentum reconstruction in pp data at √s = 8 TeV

CMS Collaboration

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Abstract

The performance of missing transverse energy reconstruction algorithms is presented using √s=8 TeV proton-proton (pp) data collected with the CMS detector. Events with anomalous missing transverse energy are studied, and the performance of algorithms used to identify and remove these events is presented. The scale and resolution for missing transverse energy, including the effects of multiple pp interactions (pileup), are measured using events with an identified Z boson or isolated photon, and are found to be well described by the simulation. Novel missing transverse energy reconstruction algorithms developed specifically to mitigate the effects of large numbers of pileup interactions on the missing transverse energy resolution are presented. These algorithms significantly reduce the dependence of the missing transverse energy resolution on pileup interactions. Finally, an algorithm that provides an estimate of the significance of the missing transverse energy is presented, which is used to estimate the compatibility of the reconstructed missing transverse energy with a zero nominal value.
Original languageEnglish
Pages (from-to)P02006
Number of pages58
JournalJournal of Instrumentation
Volume10
Issue number02
DOIs
Publication statusPublished - 12 Feb 2015

Bibliographical note

Replaced with published version. Added journal reference and DOI

Keywords

  • CMS
  • Large detector-systems performance
  • Missing transverse Energy studies
  • Performance of High Energy Physics Detectors

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