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Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at √s= 8 TeV
(2016)Journal of High Energy PhysicsResults are reported from a search for the top squark t~1, the lighter of the two supersymmetric partners of the top quark. The data sample corresponds to 19.7 fb−1 of proton-proton collisions at s√=8 TeV collected with the CMS detector at the LHC. The search targets t~1→bχ~±1 and t~1→t(∗)χ~01 decay modes, where χ~±1 and χ~01 are the lightest chargino and neutralino, respectively. The reconstructed final state consists of jets, b jets, ...Journal Article -
Search for pair-produced vectorlike B quarks in proton-proton collisions at √s=8 TeV
(2016)Physical Review DA search for the production of a heavy B quark, having electric charge −1/3 and vector couplings to W, Z, and H bosons, is carried out using proton-proton collision data recorded at the CERN LHC by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb−1. The B quark is assumed to be pair produced and to decay in one of three ways: to tW, bZ, or bH. The search is carried out in final states with one, two, and more than ...Journal Article -
Search for Higgs boson off-shell production in proton-proton collisions at 7 and 8 TeV and derivation of constraints on its total decay width
(2016)Journal of High Energy PhysicsA search is presented for the Higgs boson off-shell production in gluon fusion and vector boson fusion processes with the Higgs boson decaying into a W+W− pair and the W bosons decaying leptonically. The data observed in this analysis are used to constrain the Higgs boson total decay width. The analysis is based on the data collected by the CMS experiment at the LHC, corresponding to integrated luminosities of 4.9 fb−1 at a centre-of-mass ...Journal Article -
Search for W′ → tb in proton-proton collisions at √s=8 TeV
(2016)Journal of High Energy PhysicsA search is performed for the production of a massive W′ boson decaying to a top and a bottom quark. The data analysed correspond to an integrated luminosity of 19.7 fb−1 collected with the CMS detector at the LHC in proton-proton collisions at s√=8 TeV. The hadronic decay products of the top quark with high Lorentz boost from the W′ boson decay are detected as a single top flavoured jet. The use of jet substructure algorithms allows the ...Journal Article -
Measurement of the t(t)over-bar production cross section in the eμ channel in proton-proton collisions at √s=7 and 8 TeV
(2016)Journal of High Energy PhysicsThe inclusive cross section for top quark pair production is measured in proton-proton collisions at √s=7 and 8 TeV, corresponding to 5.0 and 19.7 fb−1, respectively, with the CMS experiment at the LHC. The cross sections are measured in the electron-muon channel using a binned likelihood fit to multi-differential final state distributions related to identified b quark jets and other jets in the event. The measured cross section values ...Journal Article -
Search for new physics in final states with two opposite-sign, same-flavor leptons, jets, and missing transverse momentum in pp collisions at sqrt(s) = 13 TeV
(2016)Journal of High Energy PhysicsA search is presented for physics beyond the standard model in final states with two opposite-sign, same-flavor leptons, jets, and missing transverse momentum. The data sample corresponds to an integrated luminosity of 2.3 fb−1 of proton-proton collisions at s√=13 TeV collected with the CMS detector at the LHC in 2015. The analysis uses the invariant mass of the lepton pair, searching for a kinematic edge or a resonant-like excess compatible ...Journal Article -
Search for long-lived charged particles in proton-proton collisions at s√= 13 TeV
(2016)Physical Review DResults are presented of a search for heavy stable charged particles produced in proton-proton collisions at √s = 13 TeV using a data sample corresponding to an integrated luminosity of 2.5 fb-1 collected in 2015 with the CMS detector at the CERN LHC. The search is conducted using signatures of anomalously high energy deposits in the silicon tracker and long time-of-flight measurements by the muon system. The data are consistent with the ...Journal Article -
Evidence for exclusive γγ → W+W− production and constraints on anomalous quartic gauge couplings in pp collisions at √s=7 and 8 TeV
(2016)Journal of High Energy PhysicsA search for exclusive or quasi-exclusive γγ → W + W − production, via pp → p (*) W + W − p (*) → p (*) μ ±e∓ p (*) at s√=8 TeV, is reported using data corresponding to an integrated luminosity of 19.7 fb−1. Events are selected by requiring the presence of an electron-muon pair with large transverse momentum p T(μ ±e∓) > 30 GeV, and no associated charged particles detected from the same vertex. The 8 TeV results are combined with the ...Journal Article -
Measurement of electroweak production of a W boson and two forward jets in proton-proton collisions at √s=8 TeV
(2016)Journal of High Energy PhysicsA measurement is presented of the cross section for the electroweak production of a W boson in association with two jets in proton-proton collisions at a center-of-mass energy of 8 TeV. The data set was collected with the CMS detector and corresponds to an integrated luminosity of 19.3 fb−1. The measured fiducial cross section for W bosons decaying to electrons or muons and for p T j1 > 60 GeV, p T j2 > 50 GeV, |η j| < 4.7, and m jj > ...Journal Article -
Search for single production of scalar leptoquarks in proton-proton collisions at √s =8 TeV
(2016)Physical Review DA search is presented for the production of both first- and second-generation scalar leptoquarks with a final state of either two electrons and one jet or two muons and one jet. The search is based on a data sample of proton-proton collisions at center-of-mass energy √s=8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 fb−1. Upper limits are set on both the first- and second-generation leptoquark ...Journal Article