Search
Results
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Measurement of the semileptonic tt ¯ + γ production cross section in pp collisions at √s=8 TeV
(2017)Journal of High Energy PhysicsA measurement of the cross section for top quark-antiquark (tt¯) pairs produced in association with a photon in proton-proton collisions at s√=8 TeV is presented. The analysis uses data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.7 fb1. The signal is defined as the production of a tt¯ pair in association with a photon having a transverse energy larger than 25 GeV and an absolute pseudorapidity ...Journal Article -
Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV
(2017)Journal of High Energy PhysicsA search is presented for massive spin-1 Z′ resonances decaying to a top quark and a heavy vector-like top quark partner T. The search is based on a 2.6 fb−1 sample of proton-proton collisions at 13 TeV collected with the CMS detector at the LHC. The analysis is optimized for final states in which the T quark decays to a W boson and a bottom quark. The focus is on all-jet final states in which both the W boson and the top quark decay into ...Journal Article -
Search for a light pseudoscalar Higgs boson produced in association with bottom quarks in pp collisions at √s=8 TeV
(2017)Journal of High Energy PhysicsA search for a light pseudoscalar Higgs boson (A) produced in association with bottom quarks and decaying into a muon pair is reported. The search uses 19.7 fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV, collected by the CMS experiment. No signal is observed in the dimuon mass range from 25 to 60 GeV. Upper limits on the cross section times branching fraction, σ(pp→bb¯¯¯A)B(A→μμ), are set.Journal Article -
Search for direct production of supersymmetric partners of the top quark in the all-jets final state in proton-proton collisions at √s=13 TeV
(2017)Journal of High Energy PhysicsA search for direct production of top squark pairs in events with jets and large transverse momentum imbalance is presented. The data are based on proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector in 2016 at the CERN LHC, and correspond to an integrated luminosity of 35.9 fb−1. The search considers a variety of R-parity conserving supersymmetric models, including ones for which the top squark ...Journal Article -
Search for associated production of dark matter with a Higgs boson decaying to bb ¯ or γγ at √s=13 TeV
(2017)Journal of High Energy PhysicsA search for dark matter is performed looking for events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons. The data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected in 2015 with the CMS detector at the LHC, correspond to an integrated luminosity of 2.3 fb−1. Results are interpreted in the context of a Z′-two-Higgs-doublet model, where ...Journal Article -
Search for light bosons in decays of the 125 GeV Higgs boson in proton-proton collisions at √s=8 TeV
(2017)Journal of High Energy PhysicsA search is presented for decays beyond the standard model of the 125 GeV Higgs bosons to a pair of light bosons, based on models with extended scalar sectors. Light boson masses between 5 and 62.5 GeV are probed in final states containing four τ leptons, two muons and two b quarks, or two muons and two τ leptons. The results are from data in proton-proton collisions corresponding to an integrated luminosity of 19.7 fb−1, accumulated by ...Journal Article -
Search for top squark pair production in pp collisions at √s=13 TeV using single lepton events
(2017)Journal of High Energy PhysicsA search for top squark pair production in pp collisions at √s=13 TeV is performed using events with a single isolated electron or muon, jets, and a large transverse momentum imbalance. The results are based on data collected in 2016 with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb−1. No significant excess of events is observed above the expectation from standard model processes. Exclusion limits are ...Journal Article -
Measurements of the pp → Wγγ and pp → Zγγ cross sections and limits on anomalous quartic gauge couplings at √s=8 TeV
(2017)Journal of High Energy PhysicsMeasurements are presented of Wγγ and Zγγ production in proton-proton collisions. Fiducial cross sections are reported based on a data sample corresponding to an integrated luminosity of 19.4 fb−1 collected with the CMS detector at a center-of-mass energy of 8 TeV. Signal is identified through the W → ℓν and Z → ℓℓ decay modes, where ℓ is a muon or an electron. The production of Wγγ and Zγγ, measured with significances of 2.6 and 5.9 ...Journal Article -
Search for new physics in the monophoton final state in proton-proton collisions at √s=13 TeV
(2017)Journal of High Energy PhysicsA search is conducted for new physics in a final state containing a photon and missing transverse momentum in proton-proton collisions at s√=13 TeV. The data collected by the CMS experiment at the CERN LHC correspond to an integrated luminosity of 12.9 fb−1. No deviations are observed relative to the predictions of the standard model. The results are interpreted as exclusion limits on the dark matter production cross sections and parameters ...Journal Article -
Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying tau leptons and two jets in proton-proton collisions at √s = 13 TeV
(2017)Journal of High Energy PhysicsA search for new particles has been conducted using events with two high transverse momentum (pT) τ leptons that decay hadronically, at least two high-pT jets, and missing transverse energy from the τ lepton decays. The analysis is performed using data from proton-proton collisions, collected by the CMS experiment in 2015 at s √ =13 s=13 TeV, corresponding to an integrated luminosity of 2.1 fb−1. The results are interpreted in two ...Journal Article