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Measurement of the mass difference between top quark and antiquark in pp collisions at √s = 8 TeV
(2017)Physics Letter BThe invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark (Δmt=mt−mt) that are produced in pp collisions at a center-of-mass energy of 8TeV, using events with a muon or an electron and at least four jets in the final state. The analysis is based on data corresponding to an ...Journal Article -
Search for physics beyond the standard model in final states with a lepton and missing transverse energy in proton-proton collisions at √s = 8 TeV
(2015)Physical Review DA search for new physics in proton-proton collisions having final states with an electron or muon and missing transverse energy is presented. The analysis uses data collected in 2012 with the CMS detector, at an LHC center-of-mass energy of 8 TeV, and corresponding to an integrated luminosity of 19.7 fb−1. No significant deviation of the transverse mass distribution of the charged lepton-neutrino system from the standard model prediction ...Journal Article -
Search for dark matter, extra dimensions, and unparticles in monojet events in proton–proton collisions at √s = 8TeV
(2015)The European Physical Journal CResults are presented from a search for particle dark matter (DM), extra dimensions, and unparticles using events containing a jet and an imbalance in transverse momentum. The data were collected by the CMS detector in proton–proton collisions at the LHC and correspond to an integrated luminosity of 19.7fb-1at a centre-of-mass energy of 8TeV. The number of observed events is found to be consistent with the standard model prediction. Limits ...Journal Article -
Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s = 7TeV
(2015)Physical Letters BMeasurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions ...Journal Article -
Measurement of the pp to ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at √s = 8 TeV
(2015)Physics Letters BA measurement of the inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton-proton collisions at s=8 TeV are presented. The analysis is based on a data sample, corresponding to an integrated luminosity of 19.6fb -1, collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ→ℓℓℓ ' ℓ ', where ℓ = e, μ and ℓ ' = e, μ, τ. The measured total cross ...Journal Article -
Erratum to: Search for new physics in events with same-sign dileptons and jets in pp collisions at √s = 8 TeV
(2015)Journal of High Energy PhysicsJournal Article -
Search for supersymmetry with razor variables in pp collisions at √s=7 TeV
(2014)Physical Review DThe razor approach to search for R–parity conserving supersymmetric particles is described in detail. Two analyses are considered: an inclusive search for new heavy particle pairs decaying to final states with at least two jets and missing transverse energy, and a dedicated search for final states with at least one jet originating from a bottom quark. For both the inclusive study and the study requiring a bottom-quark jet, the data are ...Journal Article -
Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s=7 TeV
(2014)The European Physical Journal CA measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at √s=7TeV is presented. The data sample corresponds to an integrated luminosity of 5.0fb−1 collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25GeV respectively, ...Journal Article -
Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at √s = 8 TeV by the CMS and TOTEM experiments
(2014)The European Physical Journal CPseudorapidity (η) distributions of charged particles produced in proton–proton collisions at a centre-of-mass energy of 8 TeV are measured in the ranges |η|<2.2 and 5.3<|η|<6.4 covered by the CMS and TOTEM detectors, respectively. The data correspond to an integrated luminosity of L=45 μb−1. Measurements are presented for three event categories. The most inclusive category is sensitive to 91–96 % of the total inelastic proton–proton ...Journal Article -
Study of hadronic event-shape variables in multijet final states in pp collisions at √s = 7 TeV
(2014)Journal of High Energy PhysicsEvent-shape variables, which are sensitive to perturbative and nonperturbative aspects of quantum chromodynamic (QCD) interactions, are studied in multijet events recorded in proton-proton collisions at s√=7 TeV. Events are selected with at least one jet with transverse momentum p T > 110 GeV and pseudorapidity |η| < 2.4, in a data sample corresponding to integrated luminosities of up to 5 fb−1. The distributions of five event-shape ...Journal Article