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CMS Physics Analysis Summaries

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2025-04-03
17:23
Search for new particles decaying into top quark-antiquark pairs in events with one lepton and jets in proton-proton collisions at 13 TeV /CMS Collaboration
A search for new particles decaying to top quark-antiquark pairs is performed using proton-proton collisions at a centre-of-mass energy of $13~\mathrm{TeV}$. The data recorded with the CMS detector between 2016 and 2018 are used, corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-B2G-22-006.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_005: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_007-d: PDF; Figure_007-e: PDF; Figure_007-f: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Figure_011-a: PDF; Figure_011-b: PDF; Figure_011-c: PDF; Figure_011-d: PDF; Figure_011-e: PDF; Figure_011-f: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-04-02
23:16
Measurement of event shape variables using charged particles inside jets in proton-proton collisions at s = 13 TeV /CMS Collaboration
Event shape variables, constructed from the four-momenta of the final-state objects in an event, are sensitive to the predictions of quantum chromodynamics in multijet production, while minimizing the impact of systematic uncertainties. A study of five event shape variables is presented, using proton-proton collision data collected at a centre-of-mass energy of 13$~\mathrm{TeV}$ with the CMS detector during 2016-2018, corresponding to an integrated luminosity of 138 $\mathrm{fb^{-1}}$. [...]
CMS-PAS-SMP-22-004.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_001-e: PDF; Figure_001-f: PDF; Figure_001-g: PDF; Figure_001-h: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_002-d: PDF; Figure_002-e: PDF; Figure_002-f: PDF; Figure_002-g: PDF; Figure_002-h: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_003-d: PDF; Figure_003-e: PDF; Figure_003-f: PDF; Figure_003-g: PDF; Figure_003-h: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_004-d: PDF; Figure_004-e: PDF; Figure_004-f: PDF; Figure_004-g: PDF; Figure_004-h: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_005-e: PDF; Figure_005-f: PDF; Figure_005-g: PDF; Figure_005-h: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-04-01
22:51
Search for tt resonances in the fully hadronic final state /CMS Collaboration
A search for a heavy resonance decaying into a top quark-antiquark pair is presented, using $138~\mathrm{fb}^{-1}$ of proton-proton collision data collected at $\sqrt{s}=13~\mathrm{TeV}$ with the Compact Muon Solenoid (CMS) detector. This analysis employs machine-learning-based techniques for top quark identification in the fully hadronic decay channel and achieves improved sensitivity compared to previous searches. [...]
CMS-PAS-B2G-24-003.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_007-d: PDF; Figure_007-e: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-04-01
18:28
Probing the flavour structure of dimension-6 EFT operators in multilepton final states /CMS Collaboration
An analysis of the flavour structure of dimension-6 effective field theory (EFT) operators in multilepton final states is presented, focusing on the interactions involving Z bosons. The flavour structure of these operators is disentangled by simultaneously probing the interactions with different quark generations in final states with at least three leptons, targetting the associated production of a top quark pair and a Z boson ($\mathrm{t}\overline{\mathrm{t}}\mathrm{Z}$) as well as diboson processes (WZ and ZZ). [...]
CMS-PAS-TOP-23-009.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_007-d: PDF; Figure_007-e: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_008-e: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-04-01
18:13
Combination of vector boson scattering measurements with fully- and semi-leptonic final states in proton-proton collisions at sqrt(s) = 13 TeV /CMS Collaboration
A statistical combination of vector boson scattering measurements is presented, incorporating fully leptonic and semileptonic decay channels from proton-proton collisions at $\sqrt{s} = 13$ TeV. The analysis is based on a dataset corresponding to an integrated luminosity of 138 fb$^{-1}$, collected with the CMS detector between 2016 and 2018. [...]
CMS-PAS-SMP-24-013.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_005-e: PDF; Figure_005-f: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-04-01
09:59
Combination of exclusion limits on modified couplings between top quarks and heavy bosons in the effective field theory framework /CMS Collaboration
The statistical combination of two indirect searches for physics beyond the standard model within the framework of effective field theory using $138~\mathrm{fb}^{-1}$ of data collected by the CMS experiment at $\sqrt{s}=13~\mathrm{TeV}$ is presented. In the first measurement, top quarks in association with a hadronically decaying boson with large transverse momentum are studied, while in the second, the production of top quarks associated with additional leptons is explored. [...]
CMS-PAS-TOP-24-004.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_001-e: PDF; Figure_001-f: PDF; Figure_001-g: PDF; Figure_001-h: PDF; Figure_001-i: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_002-d: PDF; Figure_002-e: PDF; Figure_002-f: PDF; Figure_002-g: PDF; Figure_002-h: PDF; Figure_002-i: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_007-d: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-03-31
16:36
Search for dark matter recoiling from a low-multiplicity jet in proton-proton collisions at 13 TeV /CMS Collaboration
A search for dark matter particles, using events containing an imbalance in transverse momentum and one energetic low-multiplicity jet, is performed using data collected in proton-proton collisions with the CMS detector at a center-of-mass energy of $13~\mathrm{TeV}$. The analysis is based on a data set corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$ collected from 2016-2018. [...]
CMS-PAS-SUS-23-017.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-03-29
11:37
Zgamma cross section measurement at 13.6 TeV /CMS Collaboration
A measurement of the $Z\gamma$ production cross section in proton-proton collisions at a center-of-mass energy of 13.6 TeV using the leptonic final states is presented. A data set corresponding to an integrated luminosity of 34.8 fb$^{-1}$, collected by the CMS experiment at the LHC in 2022 is used. [...]
CMS-PAS-SMP-24-002.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-03-29
10:01
Search for heavy resonances decaying into four leptons with high Lorentz boosts in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$ /CMS Collaboration
A search for a high-mass resonance decaying into four-lepton final states via two intermediate bosons is presented. The search uses proton-proton collision data at a center-of-mass energy of $13~\mathrm{TeV}$ collected by the CMS detector at LHC, corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-EXO-24-006.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-03-28
10:04
Search for $CP$ violation in events with top quarks and Z bosons /CMS Collaboration
A search for the violation of the charge-parity ($CP$) symmetry in the production of top quarks in association with Z bosons is presented, using events with three charged leptons and additional jets. For the first time in this final state, observables that are odd under the $CP$ transformation are employed. [...]
CMS-PAS-TOP-24-012.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_004-d: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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