Missing transverse energy performance of the CMS detector

By Cms Collaboration. Journal of Instrumentation, 2011

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During 2010 the LHC delivered pp collisions with a centre-of-mass energy of 7 TeV. In this paper, the results of comprehensive studies of missing transverse energy as measured by the CMS detector are presented. The results cover the measurements of the scale and resolution for missing transverse energy, and the effects of multiple pp interactions within the same bunch crossings on the scale and resolution. Anomalous measurements of missing transverse energy are studied, and algorithms for their identification are described. The performances of several reconstruction algorithms for calculating missing transverse energy are compared. An algorithm, called missing-transverse-energy significance, which estimates the compatibility of the reconstructed missing transverse energy with zero, is described, and its performance is demonstrated. Submitted to the Journal of Instrumentation ∗See Appendix B for the list of collaboration members ar X iv :1 10 6. 50 48 v1 [ ph ys ic s. in sde t] 2 4 Ju n 20 11

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/b3880f3ae64193dfb7c5a267694d445e5c08ece5

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Citations in the corpus

Measurement of the differential cross section for top quark pair production in pp collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin} (2015, methodology): “The missing transverse energy ET / is defined as the magnitude of the imbalance in the transverse momentum ~ pT / in the event, which is the negative of the vectorial sum of the momenta in the transverse plane of all the particles reconstructed with the particle-flow algorithm [38].”
Search for resonant t t-bar production in lepton+jets events in pp collisions at sqrt(s)=7 TeV (2012, background): “The negative of the vector sum of the momenta of all reconstructed particles in the plane transverse to the beam is the missing transverse momentum [39], with magnitude denoted by missing transverse energy E missT .”
Measurement of the Inclusive W and Z Production Cross Sections in pp Collisions at sqrt(s) = 7 TeV (2011, methodology): “We profit from the application of the PF algorithm, which provides superior E/T reconstruction performance [42] with respect to alternative algorithms at the energy scale of the W boson.”
Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV (2012, background): “In 2010, it ranged from ≈10−5 to ≈10−3, depending on the LHC fill, for muon-triggered events [42]; the fraction could be higher by an order of magnitude for hadronic-triggered events, due to the beam-halo muons’”
Performance of the CMS missing transverse momentum reconstruction in pp data at √s = 8 TeV (2014, methodology): “The ~E/T reconstruction algorithms and corrections are described with an emphasis on changes compared to those used with the 7 TeV pp data collected in 2010 [3].”
Study of double parton scattering using W + 2-jet events in proton-proton collisions at $ \sqrt{s} $ = 7 TeV (2013, background): “• Resolution of ET / : The ET / resolution differs in data and simulation [55]; this affects the ∆S distribution by at most 3.”
Performance of CMS muon reconstruction in pp collision events at √s = 7 TeV (2012, background): “In 2010, it ranged from ≈10−5 to ≈10−3, depending on the LHC fill, for muon-triggered events [42]; the fraction could be higher by an order of magnitude for hadronic-triggered events, due to the beam-halo muons’ role in triggering the event via energy deposited in the calorimeters.”
Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at $ \sqrt{s} $ = 8 TeV (2014, background): “6%) [59], trigger inefficiency (2%), and event cleaning procedure (3%) [28] are the same for all signal models and search regions.”
Performance of missing transverse momentum reconstruction in proton-proton collisions at √s = 13 TeV using the CMS detector (2019, methodology): “These sources have been studied extensively in the data collected in LHC Run 1 [13, 14].”
Search for Dark Matter and Large Extra Dimensions in pp Collisions Yielding a Photon and Missing Transverse Energy (2012, background): “Systematic uncertainties that contribute to the A× eMC calculation are from the choice of PDF [18, 23, 24]; the selection of the primary vertex for the photon, modeling of pile-up, and the energy calibration and resolution for photons [8]; jets [25]; and ET / [26].”