Reconstruction of electrons with the Gaussian-sum filter in the CMS tracker at LHC
arXiv:physics/0306087 · doi:10.1088/0954-3899/31/9/N01
Abstract
The bremsstrahlung energy loss distribution of electrons propagating in matter is highly non Gaussian. Because the Kalman filter relies solely on Gaussian probability density functions, it might not be an optimal reconstruction algorithm for electron tracks. A Gaussian-sum filter (GSF) algorithm for electron track reconstruction in the CMS tracker has therefore been developed. The basic idea is to model the bremsstrahlung energy loss distribution by a Gaussian mixture rather than a single Gaussian. It is shown that the GSF is able to improve the momentum resolution of electrons compared to the standard Kalman filter. The momentum resolution and the quality of the estimated error are studied with various types of mixture models of the energy loss distribution.
Talk from the 2003 Computing in High Energy and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, LaTeX, 14 eps figures. PSN TULT009
Cited by in corpus (48)
- Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
- Particle-flow reconstruction and global event description with the CMS detector
- Description and performance of track and primary-vertex reconstruction with the CMS tracker
- Observation of a new boson with mass near 125 GeV in pp collisions at sqrt(s) = 7 and 8 TeV
- Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
- Measurement of the properties of a Higgs boson in the four-lepton final state
- Deep Learning and its Application to LHC Physics
- Measurement of the Inclusive W and Z Production Cross Sections in pp Collisions at sqrt(s) = 7 TeV
- Measurements of Inclusive W and Z Cross Sections in pp Collisions at sqrt(s)=7 TeV
- Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
- Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
- Performance of the CMS missing transverse energy reconstruction in pp data at sqrt(s) = 8 TeV
- Measurement of the lepton charge asymmetry in inclusive W production in pp collisions at sqrt(s) = 7 TeV
- Reconstruction and identification of tau lepton decays to hadrons and tau neutrino at CMS
- Measurement of WW Production and Search for the Higgs Boson in pp Collisions at sqrt(s) = 7 TeV
- Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy
- Search for top-quark partners with charge 5/3 in the same-sign dilepton final state
- Jet Production Rates in Association with W and Z Bosons in pp Collisions at sqrt(s) = 7 TeV
- Measurement of the pp to ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at sqrt(s) = 8 TeV
- Search for vector-like leptons in multilepton final states in proton-proton collisions at = 13 TeV
- Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at sqrt(s) = 7 TeV
- Search for new resonances decaying via WZ to leptons in proton-proton collisions at sqrt(s) = 8 TeV
- Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy at the LHC
- Study of Z production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV in the dimuon and dielectron decay channels
- Measurement of the single top quark and antiquark production cross sections in the channel and their ratio in proton-proton collisions at 13 TeV
- Performance of the CMS high-level trigger during LHC Run 2
- Search for Large Extra Dimensions in the Diphoton Final State at the Large Hadron Collider
- Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at sqrt(s) = 8 TeV
- Search for new physics in the monophoton final state in proton-proton collisions at sqrt(s) = 13 TeV
- Overview of high-density QCD studies with the CMS experiment at the LHC
- Search for a low-mass pseudoscalar Higgs boson produced in association with a b b-bar pair in pp collisions at sqrt(s) = 8 TeV
- Search for a Higgs boson decaying into gamma* gamma to ll gamma with low dilepton mass in pp collisions at sqrt(s) = 8 TeV
- Measurement of the Z gamma production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings
- Search for heavy quarks decaying into a top quark and a W or Z boson using lepton + jets events in pp collisions at sqrt(s) = 7 TeV
- Search for top quark partners with charge 5/3 in the same-sign dilepton and single-lepton final states in proton-proton collisions at 13 TeV
- Search for new physics in final states with a single photon and missing transverse momentum in proton-proton collisions at 13 TeV
- Enriching the physics program of the CMS experiment via data scouting and data parking
- Measurements of the pp to W gamma gamma and pp to Z gamma gamma cross sections and limits on anomalous quartic gauge couplings at sqrt(s) = 8 TeV
- Comparison of the Z/gamma* + jets to gamma + jets cross sections in pp collisions at sqrt(s) = 8 TeV
- An embedding technique to determine backgrounds in proton-proton collision data
- Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at = 13 TeV
- Search for pair production of excited top quarks in the lepton + jets final state
- The CMS Particle Flow Algorithm
- Hadron Collider Searches for Diboson Resonances
- Search for top quark partners with charge 5/3 in proton-proton collisions at sqrt(s) = 13 TeV
- Electroweak boson production in heavy-ion collisions with CMS
- Search for Higgsinos in final states with low-momentum lepton-track pairs at 13 TeV
- WZ production cross-section measurement at 7 TeV and 8 TeV center of mass energies within the Compact Muon Solenoid experiment