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Article
Dynamic competition between spin-density wave order and superconductivity in underdoped Ba1−xKxFe2As2
An intriguing aspect of unconventional superconductivity is that it always appears in the vicinity of other competing phases, whose suppression brings the full emergence of superconductivity. In the iron pnict...
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Article
Open AccessErratum: Search for anomalous \( t\overline{t} \) production in the highly-boosted all-hadronic final state
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Article
Discovery of a single topological Dirac fermion in the strong inversion asymmetric compound BiTeCl
BiTeCl is a topological insulator with strong inversion asymmetry, which exhibits bulk charge polarization and pyroelectricity. Such a long-sought topological insulator paves the way for applications involving...
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Article
Open AccessSearch for physics beyond the standard model in events with τ leptons, jets, and large transverse momentum imbalance in pp collisions at \(\sqrt{s}=7\ \mathrm{TeV}\)
A search for physics beyond the standard model is performed with events having one or more hadronically decaying τ leptons, highly energetic jets, and large transverse momentum imbalance. The data sample correspo...
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Article
Open AccessMeasurement of the \( \mathrm{t}\overline{\mathrm{t}} \) production cross section in the all-jet final state in pp collisions at \( \sqrt{s}=7 \) TeV
A measurement is presented of the \( \mathrm{t}\overline{\mathrm{t}} \) production cross section \( \left( {{\sigma_{{\mathrm{t}\overline{\mathrm{t}}}}}} \right) \) ...
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Article
Open AccessSearch for supersymmetry in pp collisions at \(\sqrt{s} =7\) TeV in events with a single lepton, jets, and missing transverse momentum
Results are reported from a search for new physics processes in events containing a single isolated high-transverse-momentum lepton (electron or muon), energetic jets, and large missing transverse momentum. Th...
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Article
Open AccessMeasurement of differential top-quark-pair production cross sections in pp collisions at \(\sqrt{s} = 7\ \mathrm{TeV}\)
Normalised differential top-quark-pair production cross sections are measured in pp collisions at a centre-of-mass energy of 7 TeVat the LHC with the CMS detector using data recorded in 2011 corresponding to a...
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Article
Open AccessSearch for new physics in events with photons, jets, and missing transverse energy in pp collisions at \( \sqrt{s}=7 \) TeV
A search for physics beyond the standard model involving events with one or more photons, jets, and missing transverse energy has been performed by the CMS experiment. The data sample corresponds to an integra...
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Article
Open AccessSearch for exotic resonances decaying into WZ/ZZ in pp collisions at \( \sqrt{s}=7 \) TeV
A search for new exotic particles decaying to the VZ final state is performed, where V is either a W or a Z boson decaying into two overlap** jets and the Z decays into a pair of electrons, muons or neutrino...
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Article
Open AccessSearch 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
Results are presented from a search for the pair-production of heavy quarks, \( \mathrm{Q}\overline{\mathrm{Q}} \) , that decay exclusively into a top quark and a W or Z boson. The se...
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Article
Open AccessSearch for supersymmetry in final states with missing transverse energy and 0, 1, 2, or ≥3 b-quark jets in 7 TeV pp collisions using the variable α T
A search for supersymmetry in final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of ...
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Article
Open AccessMeasurement of the top-quark mass in \( \mathrm{t}\overline{\mathrm{t}} \) events with lepton+jets final states in pp collisions at \( \sqrt{s}=7 \) TeV
The mass of the top quark is measured using a sample of \( \mathrm{t}\overline{\mathrm{t}} \) candidate events with one electron ...
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Article
Open AccessMeasurement of the relative prompt production rate of χ c2 and χ c1 in pp collisions at \(\sqrt{s} = 7\ \mathrm{TeV}\)
A measurement is presented of the relative prompt production rate of χ c2 and χ c1 with 4.6 fb−1 of data collected by the CMS experiment at the LHC in pp collisions at ...
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Article
Open AccessObservation of Z decays to four leptons with the CMS detector at the LHC
The first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb−1 at
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Article
Open AccessSearch for resonant \( \mathrm{t}\overline{\mathrm{t}} \) production in lepton+jets events in pp collisions at \( \sqrt{s}=7 \) TeV
A model-independent search for the production of heavy resonances decaying into top-antitop quark pairs is presented. The search is based on events containing one lepton (muon or electron) and at least two jet...
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Article
Open AccessSearch for new physics with long-lived particles decaying to photons and missing energy in pp collisions at \( \sqrt{s}=7 \) TeV
A search is performed for long-lived neutral particles decaying into a photon and invisible particles. An example of such a signature is the decay of the lightest neutralino with nonzero lifetime into a gravit...
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Article
Open AccessSearch for electroweak production of charginos and neutralinos using leptonic final states in pp collisions at \( \sqrt{s}=7 \) TeV
The 2011 dataset of the CMS experiment, consisting of an integrated luminosity of 4.98 fb−1 of pp collisions at \( \sqrt{s}=7 \) ...
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Article
Open AccessRatios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton–proton collisions at \(\sqrt{s} = 7\ \mathrm{TeV}\)
A study of dijet production in proton–proton collisions was performed at \(\sqrt{s}=7\mbox{~TeV}\) for jets with p T>35 GeV and |
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Article
Open AccessSearch for the standard model Higgs boson produced in association with W and Z bosons in pp collisions at \( \sqrt{s}=7 \) TeV
A search for the Higgs boson produced in association with a W or Z boson in proton-proton collisions at a center-of-mass energy of 7 TeV is performed with the CMS detector at the LHC using the full 2011 data s...
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Article
Open AccessSearch for exclusive or semi-exclusive γγ production and observation of exclusive and semi-exclusive e+e− production in pp collisions at \( \sqrt{s}=7 \) TeV
A search for exclusive or semi-exclusive γγ production, pp → p(*) + γγ + p(*) (where p* stands for a diffractively-dissociated proton), and the observation of exclusive and semi-exclusive e+e− production, pp → p(...
