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

Title
Performance of the CMS missing transverse momentum reconstruction in pp data at root s=8 TeV
Authors
김태정
Keywords
Large detector-systems performance; Missing Transverse Energy studies; Performance of High Energy Physics Detectors
Issue Date
2015-02
Publisher
IOP PUBLISHING LTD
Citation
JOURNAL OF INSTRUMENTATION, v. 10, Page. 1-10
Abstract
The performance of missing transverse energy reconstruction algorithms is presented using root 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.
URI
http://iopscience.iop.org/article/10.1088/1748-0221/10/02/P02006/metahttp://hdl.handle.net/20.500.11754/22231
ISSN
1748-0221
DOI
http://dx.doi.org/10.1088/1748-0221/10/02/P02006
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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