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CMS Physics Analysis Summaries

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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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2024-11-23
10:58
Constraining nPDFs using dijet production in pPb collisions at 8.16 TeV with the CMS experiment /CMS Collaboration
The dijet pseudorapidity ($\eta^{\text{dijet}}$) distribution in proton-lead ($\text{pPb}$) collisions is sensitive to nuclear modifications of parton distribution functions (PDFs). Additionally, the measurement of the $\eta^{\text{dijet}}$ dependence of the average transverse momenta of dijets provides a precise method for investigating the energy scale of partonic interactions and their momentum transfer dependence ($Q^{2}$). [...]
CMS-PAS-HIN-24-014.- Geneva : CERN, 2024 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-11-15
22:19
Combination of searches for nonresonant Higgs boson pair production in proton-proton collisions at sqrt(s) = 13 TeV /CMS Collaboration
This note presents a comprehensive overview and statistical combination of searches for the nonresonant production of Higgs boson pairs (HH) using data from proton-proton collisions collected by the CMS experiment at the LHC from 2016 to 2018 at a centre-of-mass energy of $13~\mathrm{TeV}$, corresponding to a total integrated luminosity of $138~\mathrm{fb}^{-1}$. Upper limits at $95\%$ confidence level are set on the rate of the HH production [...]
CMS-PAS-HIG-20-011.- Geneva : CERN, 2024 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_005: PDF; Figure_006: 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_009-c: PDF; Figure_010: PDF; Figure_011-a: PDF; Figure_011-b: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Figure_013-a: PDF; Figure_013-b: PDF; Figure_014-a: PDF; Figure_014-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-10-24
16:56
Search for a new heavy scalar boson decaying into a Higgs boson and a new scalar particle in the four b-quarks final state using proton-proton collisions at $sqrt{s}=$ 13 TeV /CMS Collaboration
A search for a massive scalar resonance, X, decaying into a Higgs boson and a scalar, Y, in proton-proton collisions at a centre-of-mass energy of $13~\mathrm{TeV}$ is presented. The search is performed using a data sample corresponding to an integrated luminosity of $138\,\text{fb}^{-1}$ collected by the CMS detector. [...]
CMS-PAS-HIG-20-012.- Geneva : CERN, 2024 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_003-e: PDF; Figure_003-f: 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; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-10-09
19:21
Measurement of the tau g-2 factor in ultraperipheral PbPb collisions recorded by the CMS experiment /CMS Collaboration
Measurements of the anomalous magnetic moment of leptons provide stringent tests of the standard model and potential hints of physics beyond the standard model. These measurements for electrons and muons are among the most precisely measured quantities in physics. [...]
CMS-PAS-HIN-24-011.- Geneva : CERN, 2024 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_004-c: PDF; Figure_005: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-10-08
19:34
Evidence of the medium response with Z-hadron correlations in PbPb and pp collisions at sqrt(sNN) = 5.02 TeV /CMS Collaboration
The first measurement of low transverse momentum ($p_\mathrm{T}$) charged hadron pseudorapidity and azimuthal angle distributions relative to $Z$ bosons in PbPb collisions at a nucleon-nucleon center-of-mass energy $\sqrt{s_\mathrm{NN}} = 5.02$ TeV is presented. This study utilizes PbPb collision data recorded in 2018 with an integrated luminosity of $1.67 \pm 0.03$ nb$^{-1}$, as well as pp collision data acquired in 2017 with an integrated luminosity of $301 \pm 6$ pb$^{-1}$. [...]
CMS-PAS-HIN-23-006.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_003: PDF; Figure_004: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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