No excess observed in search for vector-like top quark T to tH in opposite-sign dilepton final states; 95% CL upper limits on sigma times BR range from 2.0 pb at 600 GeV to 0.1 pb at 1000 GeV.
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Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $\sqrt{s}=$ 13 TeV
21 Pith papers cite this work, alongside 265 external citations. Polarity classification is still indexing.
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external citations · Pith
abstract
The CMS muon detector system, muon reconstruction software, and high-level trigger underwent significant changes in 2013-2014 in preparation for running at higher LHC collision energy and instantaneous luminosity. The performance of the modified system is studied using proton-proton collision data at center-of-mass energy $\sqrt{s}=$ 13 TeV, collected at the LHC in 2015 and 2016. The measured performance parameters, including spatial resolution, efficiency, and timing, are found to meet all design specifications and are well reproduced by simulation. Despite the more challenging running conditions, the modified muon system is found to perform as well as, and in many aspects better than, previously. We dedicate this paper to the memory of Prof. Alberto Benvenuti, whose work was fundamental for the CMS muon detector.
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2026 21representative citing papers
CMS observes η → μ⁺μ⁻e⁺e⁻ for the first time and measures its branching fraction as (2.4 ± 0.8) × 10^{-6}.
The measured cross-section ratio to a no-nuclear-effects baseline is 0.25, yielding a nuclear gluon suppression factor R_g^Pb of 0.55 at x ≈ 10^{-3} and μ² = 22.4 GeV².
CMS reports a simultaneous measurement of 25 N-subjettiness observables in 1-, 2-, and 3-prong jets, unfolded to stable particles with particle-level correlations for QCD modeling.
First evidence for ZZ gamma production at 3.7 sigma and observation of 4 lepton gamma at 5.0 sigma in CMS data at 13 TeV, with measured fiducial cross sections consistent with predictions.
The ttbar production cross section in PbPb collisions at 5.36 TeV is measured as 3.42 +0.54-0.51 (stat) +0.50-0.43 (syst) μb and is consistent with NNLO pQCD predictions using nuclear PDFs.
No significant excess observed; 95% CL exclusion of higgsino electroweakinos with mass splittings 0.28-1.15 GeV and chargino masses up to 185 GeV using soft-track and neural-network selection.
CMS excludes κ_VV outside 0.40-1.60 at 95% CL and constrains κ_2W and κ_2Z using VBS events with a boosted Higgs to bb decay.
No significant excess observed in four-lepton events from heavy resonances, setting upper limits on production cross sections for dilepton masses 0.4-15 GeV using novel merged-object techniques.
CMS develops two multivariate models for identifying boosted dielectrons with γ_L > 20, reporting 80% efficiency for two-track cases from J/ψ data and 60% for single-track from Z conversions, plus an energy correction.
No excess found in search for T' to top plus phi; excludes T' masses 0.85-1.3 TeV at 95% CL for SM Higgs case with 5% width, and sets cross-section limits as low as 0.1 fb.
PaRT achieves >50% tagging efficiency for boosted H->WW jets at 1% background efficiency, decorrelated from jet mass, with data-to-simulation scale factors of 0.9-1.0 on 138 fb^{-1} of 13 TeV collisions.
No significant excess is observed in leptonic W/Z plus high-multiplicity soft-particle events, setting limits on Higgs to SUEP decays across a range of model parameters.
No significant excess found; new exclusion limits reach m_H = 108 GeV for m_H - m_A = 78 GeV in the Inert Doublet Model.
No evidence found for a new heavy scalar resonance X decaying to Higgs plus new scalar Y in the four-bottom-quark final state; 95% CL upper limits set on cross section times branching fraction.
No evidence found for light charged Higgs bosons in ttbar events; upper limits set on B(t to H±b) of 0.07-1.12% at 95% CL for masses 40-160 GeV assuming 100% decay to cs.
No evidence found; excludes semiclassical black holes below 8.4-11.4 TeV and string balls below 9.0-10.7 TeV at 95% CL, and caps the quark-quark sphaleron fraction above 9 TeV at 0.0034.
CMS sets an observed upper limit of 4.4 on the HH signal strength μ_HH in the 4b final state at 13.6 TeV, improving prior LHC results by more than a factor of two in the resolved topology.
New double-differential measurement of angular coefficients A0-A7 in Drell-Yan muon pair production in eight pT and two rapidity bins, compared to NNLO pQCD.
New upper limits exclude mediator masses up to 4.5 TeV for a 50 GeV dark Higgs and up to 2.5 TeV for 150 GeV in a spin-1 mediator dark matter model, the most stringent to date for these masses.
No significant excess observed in search for vector-like quark single production to Wb, setting 95% CL upper limits on κ_W as low as 0.086 near 1.4 TeV mass and excluding masses below 2.4 TeV at κ_W=0.2.
citing papers explorer
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Search for single vector-like quark production in opposite-sign dilepton final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No excess observed in search for vector-like top quark T to tH in opposite-sign dilepton final states; 95% CL upper limits on sigma times BR range from 2.0 pb at 600 GeV to 0.1 pb at 1000 GeV.
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Observation of the rare decay $\eta$ $\to$ $\mu^+\mu^-$e$^+$e$^-$
CMS observes η → μ⁺μ⁻e⁺e⁻ for the first time and measures its branching fraction as (2.4 ± 0.8) × 10^{-6}.
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Observation of nuclear suppression in coherent $\Upsilon$(1S) photoproduction off heavy nuclei at the LHC
The measured cross-section ratio to a no-nuclear-effects baseline is 0.25, yielding a nuclear gluon suppression factor R_g^Pb of 0.55 at x ≈ 10^{-3} and μ² = 22.4 GeV².
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Simultaneous measurements of $N$-subjettiness observables in jets from gluons and light-flavour quarks, and in decays of boosted W bosons and top quarks
CMS reports a simultaneous measurement of 25 N-subjettiness observables in 1-, 2-, and 3-prong jets, unfolded to stable particles with particle-level correlations for QCD modeling.
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Evidence of ZZ$\gamma$ production and observation of $4\ell\gamma$ in proton-proton collisions at $\sqrt{s}$ = 13 TeV
First evidence for ZZ gamma production at 3.7 sigma and observation of 4 lepton gamma at 5.0 sigma in CMS data at 13 TeV, with measured fiducial cross sections consistent with predictions.
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Measurement of the top quark pair production cross section in PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.36 TeV
The ttbar production cross section in PbPb collisions at 5.36 TeV is measured as 3.42 +0.54-0.51 (stat) +0.50-0.43 (syst) μb and is consistent with NNLO pQCD predictions using nuclear PDFs.
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Search for electroweakinos in compressed-spectrum scenarios with low-momentum isolated tracks in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No significant excess observed; 95% CL exclusion of higgsino electroweakinos with mass splittings 0.28-1.15 GeV and chargino masses up to 185 GeV using soft-track and neural-network selection.
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Search for associated production of a Higgs boson and two vector bosons via vector boson scattering at $\sqrt{s}$ = 13 TeV
CMS excludes κ_VV outside 0.40-1.60 at 95% CL and constrains κ_2W and κ_2Z using VBS events with a boosted Higgs to bb decay.
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Search for heavy resonances decaying into four-lepton final states via light bosons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No significant excess observed in four-lepton events from heavy resonances, setting upper limits on production cross sections for dilepton masses 0.4-15 GeV using novel merged-object techniques.
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Highly boosted dielectron identification in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS develops two multivariate models for identifying boosted dielectrons with γ_L > 20, reporting 80% efficiency for two-track cases from J/ψ data and 60% for single-track from Z conversions, plus an energy correction.
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Search for a new heavy resonance decaying to a top quark and a neutral scalar boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No excess found in search for T' to top plus phi; excludes T' masses 0.85-1.3 TeV at 95% CL for SM Higgs case with 5% width, and sets cross-section limits as low as 0.1 fb.
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Particle transformers for identifying Lorentz-boosted Higgs bosons decaying to a pair of W bosons
PaRT achieves >50% tagging efficiency for boosted H->WW jets at 1% background efficiency, decorrelated from jet mass, with data-to-simulation scale factors of 0.9-1.0 on 138 fb^{-1} of 13 TeV collisions.
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Search for soft unclustered energy patterns produced in association with a W or Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No significant excess is observed in leptonic W/Z plus high-multiplicity soft-particle events, setting limits on Higgs to SUEP decays across a range of model parameters.
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Search for pair production of additional neutral scalars within the Inert Doublet Model in a final state with two electrons or two muons in proton-proton collisions at $\sqrt{s}$ = 13 TeV and 13.6 TeV
No significant excess found; new exclusion limits reach m_H = 108 GeV for m_H - m_A = 78 GeV in the Inert Doublet Model.
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Search for a new heavy scalar resonance decaying into the Higgs boson and a new scalar particle in the $\mathrm{b}\bar{\mathrm{b}}\mathrm{b}\bar{\mathrm{b}}$ final state using proton-proton collisions at $\sqrt{s}$ = 13 TeV
No evidence found for a new heavy scalar resonance X decaying to Higgs plus new scalar Y in the four-bottom-quark final state; 95% CL upper limits set on cross section times branching fraction.
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Search for light charged Higgs bosons decaying to charm and strange quarks in $\mathrm{t\bar{t}}$ events in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No evidence found for light charged Higgs bosons in ttbar events; upper limits set on B(t to H±b) of 0.07-1.12% at 95% CL for masses 40-160 GeV assuming 100% decay to cs.
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A search for microscopic black holes, string balls, and sphalerons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No evidence found; excludes semiclassical black holes below 8.4-11.4 TeV and string balls below 9.0-10.7 TeV at 95% CL, and caps the quark-quark sphaleron fraction above 9 TeV at 0.0034.
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Improved results on Higgs boson pair production in the 4b final state
CMS sets an observed upper limit of 4.4 on the HH signal strength μ_HH in the 4b final state at 13.6 TeV, improving prior LHC results by more than a factor of two in the resolved topology.
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Measurement of the Z $\to$ $\mu^+\mu^-$ angular coefficients in pp collisions at $\sqrt{s}$ = 13 TeV as functions of transverse momentum and rapidity
New double-differential measurement of angular coefficients A0-A7 in Drell-Yan muon pair production in eight pT and two rapidity bins, compared to NNLO pQCD.
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Search for dark matter produced in association with a dark Higgs boson decaying into a bottom quark-antiquark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
New upper limits exclude mediator masses up to 4.5 TeV for a 50 GeV dark Higgs and up to 2.5 TeV for 150 GeV in a spin-1 mediator dark matter model, the most stringent to date for these masses.
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Search for the single production of vector-like quarks decaying into a W boson and a b quark using single-lepton final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No significant excess observed in search for vector-like quark single production to Wb, setting 95% CL upper limits on κ_W as low as 0.086 near 1.4 TeV mass and excluding masses below 2.4 TeV at κ_W=0.2.