2011
DOI: 10.1088/1748-0221/6/09/p09001
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Missing transverse energy performance of the CMS detector

Abstract: The results of comprehensive studies of missing transverse energy as measured by the CMS detector in pp collisions at a centre-of-mass energy of 7 TeV are presented. Three missing transverse energy reconstruction algorithms are deployed for various physics analyses. The scale and resolution for missing transverse energy are validated using vector boson and dijet events, and severe mismeasurements due to the detector are studied. We also parametrize the effects of multiple pp interactions within the same bunch … Show more

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Cited by 123 publications
(136 citation statements)
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References 15 publications
(17 reference statements)
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“…The missing transverse energy / E T is defined as the magnitude of the transverse momentum imbalance / p T , which is the negative of the vectorial sum of the transverse momenta of all the particles reconstructed with the particle-flow algorithm [37].…”
Section: Lepton and Jet Reconstructionmentioning
confidence: 99%
“…The missing transverse energy / E T is defined as the magnitude of the transverse momentum imbalance / p T , which is the negative of the vectorial sum of the transverse momenta of all the particles reconstructed with the particle-flow algorithm [37].…”
Section: Lepton and Jet Reconstructionmentioning
confidence: 99%
“…If more than one vertex is found, the one with the highest p 2 T sum of associated tracks is chosen as the interaction point for event reconstruction. Algorithms are used to remove events with detector-and beam-related noise that can mimic event topologies with high energy and large p T imbalance [166,167,133].…”
Section: Event Selectionmentioning
confidence: 99%
“…Finally, events containing signatures consistent with beam-induced background or anomalous noise in the calorimeters are rejected using dedicated filters [166,133].…”
Section: Analysis Strategy and Event Selectionmentioning
confidence: 99%
“…Neutrinos from W boson decays escape the detector, and thereby give rise to a significant imbalance in the net transverse momentum measured for each event. This missing transverse momentum, expressed as the quantity E T / , is defined as the absolute value of the vector sum of the transverse momenta of all reconstructed particles [33].…”
Section: Cms Detector and Triggermentioning
confidence: 99%
“…The uncertainty related to the presence of additional interactions (pile-up) in the same beam crossing interval as an event is examined by varying the number of such interactions included in the simulations. The systematic effects of the uncertainties in jet-energy-scale, jet resolution, E T / resolution, pile-up events, and trigger efficiency are found to be small [32,33]. Uncertainty sets given by CTEQ6 [47] are used to determine the uncertainties from the choice of parton distribution functions.…”
Section: Systematic Uncertaintiesmentioning
confidence: 99%