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CMS Physics Analysis Summaries

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2025-09-09
16:49
Measurement of the top quark pair production cross section in PbPb collisions at sqrtsNN=5.36 TeV /CMS Collaboration
The first measurement of the production cross section of top quark pairs (${\rm t\bar{t}}$) in lead-lead collisions at $\sqrt{s_{\rm NN}}=5.36$ TeV is presented. The data were collected by the CMS experiment in 2023, corresponding to an integrated luminosity of 1.58 nb$^{-1}$. [...]
CMS-PAS-HIN-24-021.- Geneva : CERN, 2025 Figure_001-a: PDF; Figure_001-b: 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-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_004-d: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-09-08
10:18
Pseudorapidity distributions of charged hadrons in oxygen-oxygen collisions at 5.36 TeV /CMS Collaboration
We report the first measurement of the charged hadron pseudorapidity ($\eta$) distributions in oxygen-oxygen collisions at a nucleon-nucleon center-of-mass energy of $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = 5.36\,\text{TeV}$. The data were recorded by the CMS experiment at the LHC in 2025. [...]
CMS-PAS-HIN-25-010.- Geneva : CERN, 2025 Figure_001: 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: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-09-08
10:18
Charged particle nuclear modification factor in neon-neon collisions and system-size dependence of nuclear suppression effects /CMS Collaboration
Measurements of high transverse momentum ($p_{\mathrm{T}}$) charged particles in light-ion collisions probe the onset of medium-induced parton energy loss and the formation of a hot, deconfined medium in small systems. In this note, we report the first measurement of $p_{\mathrm{T}}$-differential invariant cross section for charged particles in minimum-bias neon-neon collisions at $\sqrt{\smash[b]s_{_{\mathrm{NN}}}} = 5.36\,\text{TeV}$, in the range $3<p_{\mathrm{T}}<100\,\text{GeV}$, using $0.76\,\text{nb}^{-1}$ of data collected with the CMS detector in 2025. [...]
CMS-PAS-HIN-25-014.- 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-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_006: PDF; Figure_007: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-09-08
09:04
Collective flow in OO and NeNe collisions at 5.36 TeV /CMS Collaboration
The collective flow in oxygen-oxygen (OO) and neon-neon (NeNe) collisions provide important information about the origin of collectivity in small collision systems. They also serve as probes for nuclear structure of O and Ne nuclei. [...]
CMS-PAS-HIN-25-009.- 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; Figure_009: PDF; Figure_010: PDF; Figure_011: PDF; Figure_012: PDF; Figure_013: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-09-08
09:02
Measurement of the charged particle nuclear modification factor in oxygen-oxygen collisions with CMS /CMS Collaboration
A hot medium, known as the quark-gluon plasma (QGP), is created in collisions of relativistic heavy nuclei such as lead or gold. Highly energetic quarks and gluons, collectively referred to as partons, lose energy as they travel through the QGP leading to suppressed production of particles with transverse momenta ($p_{\mathrm{T}}$) of roughly 10--100 GeV. [...]
CMS-PAS-HIN-25-008.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002: 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_007: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-09-04
22:07
Search for scalar leptoquarks produced via muon-quark scattering in pp collisions at sqrt(s) = 13 TeV /CMS Collaboration
The first search for scalar leptoquarks at the $\mathrm{TeV}$ scale produced in muon-quark collisions is presented. It is based on a set of proton-proton (pp) collision data recorded with the CMS detector at the LHC at a center-of-mass energy of 13 $\mathrm{TeV}$ corresponding to an integrated luminosity of 138 $\mathrm{fb}^{-1}$. [...]
CMS-PAS-EXO-24-005.- 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_004-c: PDF; Figure_004-d: 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_006-c: PDF; Figure_006-d: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-08-27
22:00
Constraints on the Higgs boson total decay width using signal-background interference in the diphoton final state with proton-proton collisions at sqrt{s} = 13 TeV /CMS Collaboration
The standard model Higgs boson with a mass of 125 GeV is predicted to have a decay width $\Gamma_H$ of 4.1 MeV. Direct $\Gamma_H$ measurements using on-shell Higgs boson production are limited by the experimental resolution which is of the order of 1 GeV in the diphoton and four-lepton final states. [...]
CMS-PAS-HIG-25-004.- 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; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-08-27
13:52
Search for heavy resonances decaying into two Higgs bosons in the bbtautau final state in proton-proton collisions at sqrt{s} = 13 TeV /CMS Collaboration
A search is presented for massive narrow-width resonances in the mass range of $1\text{-}4.5\,\text{TeV}$ decaying into pairs of Higgs bosons (HH), using proton-proton collision data at a center-of-mass energy of $13\,\text{TeV}$ collected with the CMS detector at the LHC during the $2016\text{-}2018$ data-taking. The data correspond to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-B2G-24-014.- Geneva : CERN, 2025 Figure_001: 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; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-08-23
18:51
Search for s-channel production of lepton-enriched semivisible jets in proton-proton collisions at 13 TeV /CMS Collaboration
A search for resonant production of strongly-coupled dark matter manifesting as lepton-enriched semivisible jets in proton-proton collisions at the LHC is presented. The search is performed using data collected by the CMS experiment during 2016--2018 at a center-of-mass energy of 13 TeV corresponding to a total integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-EXO-24-029.- Geneva : CERN, 2025 Figure_001: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2025-08-23
18:00
Precision luminosity measurement in proton-proton collisions at sqrt{s} = 13 TeV with the CMS detector /CMS Collaboration
The measurement of the integrated luminosity recorded by the CMS detector at the LHC in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ in 2017 and 2018 is reported. The absolute luminosity calibration is obtained with the van der Meer (vdM) method through beam-separation scans that were performed in special accelerator conditions. [...]
CMS-PAS-LUM-20-001.- 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: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: 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_011-a: PDF; Figure_011-b: PDF; Figure_012: PDF; Figure_013: PDF; Figure_014: PDF; Figure_015-a: PDF; Figure_015-b: PDF; Figure_015-c: PDF; Figure_015-d: PDF; Figure_016: PDF; Figure_017: PDF; Figure_018: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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