Performance of the CMS missing transverse momentum reconstruction in pp data at $\sqrt{s}$ = 8 TeV

Khachatryan, Vardan

doi:10.1088/1748-0221/10/02/P02006

Title: Performance of the CMS missing transverse momentum reconstruction in pp data at $$\sqrt{s}$$ = 8 TeV

Journal Article · Thu Feb 12 00:00:00 EST 2015 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/10/02/P02006· OSTI ID:1234862

Khachatryan, Vardan ^[1]

Yerevan Physics Inst. (YerPhI) (Armenia). et al.

The performance of missing transverse energy reconstruction algorithms is presented by our team 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. Furthermore, 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.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1234862

Report Number(s):: FERMILAB-PUB-14-492-CMS; CERN-PH-EP-2014-246; CMS-JME-13-003; arXiv eprint number arXiv:1411.0511; TRN: US1600705

Journal Information:: Journal of Instrumentation, Vol. 10; ISSN 1748-0221

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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