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CMS Physics Analysis Summaries

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2025-08-14
19:30
Search for dark matter produced in association with a dark Higgs boson decaying into a bottom quark pair in proton-proton collisions at 13 TeV /CMS Collaboration
A search for dark matter produced in association with a dark Higgs boson decaying into a bottom quark pair has been performed in proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS detector during the 2016-2018 data-taking period at the CERN LHC. The analyzed data sample corresponds to an integrated luminosity of 138 $\mathrm{fb}^{-1}$. [...]
CMS-PAS-SUS-23-013.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-08-02
14:42
Simultaneous measurements of $N$-subjettiness observables in light-flavour quark and gluon jets, and in hadronic decays of boosted W bosons and top quarks /CMS Collaboration
A simultaneous measurement of twenty-five jet substructure observables is presented using large-radius jets with high transverse momentum from proton-proton collisions at $\sqrt{s}=13$ TeV. The measurement is carried out on QCD dijet events and $\mathrm{t\overline{t}}$ events enriched in boosted, hadronic decays of W bosons and top quarks. [...]
CMS-PAS-SMP-22-003.- 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_005-a: PDF; Figure_005-b: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010: PDF; Figure_011: PDF; Figure_012: PDF; Figure_013-a: PDF; Figure_013-b: PDF; Figure_014-a: PDF; Figure_014-b: PDF; Figure_015-a: PDF; Figure_015-b: PDF; Figure_016-a: PDF; Figure_016-b: PDF; Figure_017-a: PDF; Figure_017-b: PDF; Figure_017-c: PDF; Figure_017-d: PDF; Figure_018-a: PDF; Figure_018-b: PDF; Figure_018-c: PDF; Figure_018-d: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-08-02
09:45
Particle transformers for identifying Lorentz-boosted Higgs bosons decaying to a pair of W bosonsn /CMS Collaboration
A novel deep neural network classifier, the "particle transformer" (ParT), is introduced for the identification of highly Lorentz-boosted, multi-pronged jets in measurements and searches performed with the CMS detector at the LHC. Based on a self-attention mechanism that allows the model to weigh the importance of different particles, ParT is trained on a wide variety of topologies, notably demonstrating strong performance for the first time on jets originating from boosted Higgs boson decays to W bosons. [...]
CMS-PAS-JME-25-001.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002: PDF; Figure_003: 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; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_008-e: PDF; Figure_008-f: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_010: PDF; Figure_011-a: PDF; Figure_011-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-07-27
20:29
A search for a heavy resonance decaying to a top quark and a new scalar in the boosted all-hadronic final state at $\sqrt{s}=$ 13 TeV /CMS Collaboration
A search for a heavy resonance decaying to a top quark and a neutral scalar boson $\phi$ in the all-hadronic final state is presented, where the $\phi$ boson candidate is identified by its decay into a bottom quark-antiquark pair. The search is focused on final states in which the decay products of the highly Lorentz-boosted top quark and $\phi$ boson are each expected to be reconstructed as single, large-radius jets with distinct substructures. [...]
CMS-PAS-B2G-22-001.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_003-d: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006: PDF; Figure_007: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-07-21
14:00
Measurement of the t-channel single top quark cross section in pp collision data at sqrt(s) = 5.02 TeV /CMS Collaboration
The single top quark $t$-channel production cross section is measured in proton-proton collisions at $\sqrt{s}=5.02$ TeV using data recorded in 2017, corresponding to an integrated luminosity of $302~\mathrm{pb}^{-1}$. Events with one electron or muon and two or more jets, among which one or more are identified as coming from a b quark, are analyzed. [...]
CMS-PAS-TOP-24-011.- 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_005-a: PDF; Figure_005-b: PDF; Figure_006: PDF; Figure_007: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-07-18
21:08
Search for the pair production of long-lived supersymmetric partners of the tau lepton in proton-proton collisions at sqrt{s}=13 TeV /CMS Collaboration
Gauge-mediated supersymmetry breaking models provide a strong motivation to search for a supersymmetric partner of the tau lepton (stau) with a macroscopic lifetime. Long-lived stau decays produce tau leptons that are displaced from the primary proton-proton interaction vertex, leading to unconventional signatures in the detector. This study presents the first search for the direct production of long-lived staus decaying within the tracker volume in proton-proton collisions at $\sqrt{s} = 13$ TeV, performed with a dedicated graph network-based identification algorithm for displaced tau leptons. The data sample used, corresponding to an integrated luminosity of 138 fb$^{-1}$, was recorded with the CMS experiment at the CERN LHC between 2016 and 2018. This search excludes at $95\%$ confidence level stau masses in the $90{-}290$ ($90{-}450$) GeV range for $c\tau_{0} = 50$ mm in the maximally mixed (mass degenerate) scenario, while for $m_{\tilde{\tau}} = 200$ GeV, stau proper lifetimes are excluded in the range $15{-}130$ ($5{-}390$) mm..
CMS-PAS-EXO-24-020.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Figure_006-e: PDF; Figure_006-f: 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; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-07-15
11:02
Measurement of the photon-fusion production cross section of a pair of W bosons /CMS Collaboration
A measurement of the cross section of W boson pair production in photon fusion ($\gamma\gamma\rightarrow\mathrm{WW}$) is presented, using an integrated luminosity of $138~\mathrm{fb}^{-1}$ of proton-proton collision data collected in 2016-2018 at a center-of-mass energy of $\sqrt{s}=13~\mathrm{TeV}$. Events are selected in the final state with one electron, one muon, and a low multiplicity of tracks associated with the electron-muon production vertex. [...]
CMS-PAS-SMP-24-019.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-07-14
15:15
Search for new physics using single-lepton events with high jet and b jet multiplicities in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
This note presents a search for new physics using single-lepton events with high multiplicity of jets and b-tagged jets, without a requirement on missing transverse momentum. The analysis is based on proton-proton collision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-SUS-21-005.- 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_003-c: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-07-14
11:36
Measurement of the charge asymmetry in WH production in the H to tau tau decay channel /CMS Collaboration
We are presenting a measurement of the charge asymmetry in $\mathrm{WH}$ production based on the full LHC Run-2 data set of proton-proton collisions at a center-of-mass energy of $13 \, \mathrm{TeV}$ collected with the CMS experiment in the years 2016-2018. The data set corresponds to an integrated luminosity of $138 \, \mathrm{fb}^{-1}$. [...]
CMS-PAS-HIG-24-019.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002: 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_004-a: PDF; Figure_004-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-07-13
14:11
Search for long-lived particles decaying into muons in proton-proton collisions at $\sqrt{s}=13.6~\mathrm{TeV}$ using the CMS scouting data sets /CMS Collaboration
A search for long-lived particles decaying into muons is performed using proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13.6~\mathrm{TeV}$, collected by the CMS experiment at the LHC in 2022 and 2023, corresponding to an integrated luminosity of $62.4~\mathrm{fb}^{-1}$. The data sets used in this search were collected with a dedicated dimuon trigger stream with low transverse momentum thresholds, recorded at high rate by retaining a reduced amount of information, in order to explore otherwise inaccessible phase space at low multimuon mass and nonzero displacement from the primary interaction vertex. [...]
CMS-PAS-EXO-24-016.- 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_003-c: PDF; Figure_003-d: PDF; Figure_004-a: PDF; Figure_004-b: 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_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_009-a: PDF; Figure_009-b: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Figure_010-c: PDF; Figure_010-d: 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_013-a: PDF; Figure_013-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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