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CMS Physics Analysis Summaries

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2025-03-19
17:28
Search for a very low mass diphoton resonance using 2018 data /CMS Collaboration
The existence of a new spin-zero particle with a mass lower than the electroweak scale is predicted by several theoretical models, and searches for resonant production of photon pairs at the LHC are able to probe these models. We present a search for a narrow resonance produced through gluon-fusion that decays into a pair of photons in the invariant mass range between 10 and 70 GeV, using a proton-proton collision data set from the CMS experiment. [...]
CMS-PAS-HIG-24-014.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_009: PDF; Figure_010: PDF; Figure_011: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-03-13
18:59
Observation of magic states of top quark pairs produced in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
An observation of magic states of top quark-antiquark ($\mathrm{t\bar{t}}$) systems produced in proton-proton collisions at the LHC at $\sqrt{s}=13~\mathrm{TeV}$ is presented. Magic, defined here using the second stabilizer R$\mathrm{\acute e}$nyi entropy, is an important property used to characterize quantum states in quantum information science. [...]
CMS-PAS-TOP-25-001.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-03-13
09:56
Search for charged lepton flavor violating Z and Z' boson decays in proton-proton collisions at sqrt(s) = 13 TeV /CMS Collaboration
A search for charged lepton flavor violating decays of the Z boson is performed using data from proton-proton collisions at $\sqrt{s}=13$ TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 138 fb$^{-1}$. The Z $\rightarrow$ e$\mu$, Z $\rightarrow$ e$\tau$, and Z $\rightarrow\mu\tau$ decays are considered separately, where hadronic and different-flavor leptonic $\tau$ decays are used in the latter two searches. [...]
CMS-PAS-SMP-23-003.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_008: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_009-d: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Figure_010-c: PDF; Figure_011-a: PDF; Figure_011-b: PDF; Figure_011-c: PDF; Figure_011-d: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Figure_012-c: PDF; Figure_013-a: PDF; Figure_013-b: PDF; Figure_014-a: PDF; Figure_014-b: PDF; Figure_014-c: PDF; Figure_014-d: PDF; Figure_015: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-03-08
17:23
Study of semileptonic vector boson scattering and anomalous quartic gauge coupling from proton-proton collisions at 13 TeV /CMS Collaboration
A measurement of the electroweak production of ZV (V = W, Z) boson pairs associated with two jets in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The analysis targets final states with two isolated electrons or muons from Z decays and three to four jets, depending on the momentum of the vector boson that decays into quarks. [...]
CMS-PAS-SMP-22-011.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_003-d: 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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2025-03-08
13:03
Measurement of WWZ and ZH cross sections at sqrt(s)=13 and 13.6 TeV in the four-lepton channel with the CMS detector /CMS Collaboration
A measurement is presented of the cross section in proton-proton collisions for the production of two W bosons and one Z boson. It is based on a data recorded by the CMS experiment at the CERN LHC at center-of-mass energies $\sqrt{s}$=13 and 13.6 TeV, and corresponding to an integrated luminosity of 200 fb$^{-1}$. [...]
CMS-PAS-SMP-24-015.- 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; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-02-26
15:16
Characterizing the Initial State in XeXe and PbPb Collisions using Multiparticle Cumulants /CMS Collaboration
The nuclear shape and size dependences of Fourier flow harmonics ($v_{n}$, $n = 2,3,4$) in XeXe collisions at $\sqrt{s_{{\mathrm{NN}}}} = 5.44~\mathrm{TeV}$ and PbPb collisions at $\sqrt{s_{{\mathrm{NN}}}} = 5.36~\mathrm{TeV}$ are studied using the CMS detector. For the first time, correlations between higher-power moments of two or three flow harmonics, as a function of collision centrality, are compared in XeXe and PbPb collisions. [...]
CMS-PAS-HIN-24-004.- Geneva : CERN, 2025 Figure_001-a: PNG; Figure_001-b: PNG; Figure_002-a: PNG; Figure_002-b: PNG; Figure_003-a: PNG; Figure_003-b: PNG; Figure_004-a: PNG; Figure_004-b: PNG; Figure_005-a: PNG; Figure_005-b: PNG; Figure_006-a: PNG; Figure_006-b: PNG; Figure_007-a: PNG; Figure_007-b: PNG; Figure_008-a: PNG; Figure_008-b: PNG; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-02-18
18:46
First $k_{\mathrm{T}}$ scan of the Lund jet plane in heavy-ion collisions to test the factorization of the vacuum and medium parton shower /CMS Collaboration
This note presents the first relative transverse momentum ($k_{\mathrm{T}}$) scan of the Lund jet plane for high-energy jets in lead-lead (Pb-Pb) collisions at the LHC at a nucleon-nucleon center-of-mass energy of 5.02 TeV. We report the fully corrected angular distribution of the primary emissions with the highest $k_{\mathrm{T}}$ in two different ranges of $k_{\mathrm{T}}$ for anti-$k_{\mathrm{T}}$ jets with distance parameter $R=0.4$ and transverse momentum in the range $200 < p_{\mathrm{T}}^\text{jet} < 1000$ GeV. [...]
CMS-PAS-HIN-24-016.- Geneva : CERN, 2025 Figure_001: PNG; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-02-14
21:05
A new method for correcting the substructure of multi-prong jets using Lund jet plane reweighting in the CMS experiment /CMS Collaboration
Many analyses at the CERN LHC employ techniques exploiting the substructure of large-radius jets. These techniques aim to identify large-radius jets originating from heavy resonances produced with high momenta that decay into multiple quarks or gluons. [...]
CMS-PAS-JME-23-001.- Geneva : CERN, 2025 Figure_001: 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_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_003-d: 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_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_005-e: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_009: PDF; Figure_010: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-01-20
09:05
Measurements of the Upsilon(1S) meson production in association with a Z boson in proton-proton collisions at sqrt(s)=13 TeV /CMS Collaboration
The first measurement of the associated production of an $\Upsilon$(1S) meson with a Z boson using the four-muon final state is presented. The analysis is based on proton-proton data at $\sqrt{s}=13~\mathrm{TeV}$, collected with the CMS detector in 2016--2018 and corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-BPH-23-007.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-12-05
18:47
ttH multilepton (differential) /CMS Collaboration
The production of a Higgs (H) boson in association with two top quarks ($\mathrm{t\bar{t}H}$) in final states containing multiple electrons, muons, or hadronically decaying tau leptons is measured using proton-proton collisions recorded at a center-of-mass energy of 13~TeV with the CMS detector. The analyzed data correspond to an integrated luminosity of 138 $\mathrm{fb^{-1}}$. The analysis aims at events that contain $\mathrm{H \rightarrow WW}$ or $\mathrm{H \rightarrow} \tau \tau$ decays and the top quarks decay into final states with leptons or hadrons. [...]
CMS-PAS-HIG-23-015.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_002-d: PDF; Figure_002-e: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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