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CMS Physics Analysis Summaries

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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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2024-10-08
08:52
Jet shapes based on two-particle angular correlations in PbPb collisions at $\sqrt{{s}_{\rm NN}}$ = 5.02 TeV /CMS Collaboration
In ultrarelativistic heavy ion collisions, long- and short-range correlations can be studied by forming two-dimensional histograms of the separations in pseudorapidity and azimuth of each particle in an event with every other particle in that event, with the two particles forming a pair selected in specified transverse-momentum ranges. Averaged over many events, jets result in a well defined peak structure centered at zero separation in pseudorapidity and azimuth. This note explores the evolution of the two-particle jet peak shape with the pair transverse momentum ranges, the collision centrality, and the pseudorapidity of the jet peak. [...]
CMS-PAS-HIN-24-008.- Geneva : CERN, 2024 Figure_001: PNG; 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_005: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Figure_007: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_009: PNG; Figure_011-a: PDF; Figure_011-b: PDF; Figure_011-c: PDF; Figure_011-d: PDF; Figure_011-e: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Figure_012-c: PDF; Figure_012-d: PDF; Figure_012-e: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-10-07
18:55
The strong coupling constant and its running from inclusive jet production at CMS /CMS Collaboration
A comprehensive analysis at next-to-next-to-leading order (NNLO) accuracy in quantum chromodynamics (QCD) is presented. It uses double-differential cross section measurements of inclusive jet production from the CMS Collaboration at centre-of-mass energies of 2.76, 7, 8, and 13 TeV. [...]
CMS-PAS-SMP-24-007.- Geneva : CERN, 2024 Figure_001: PDF; Figure_002: PDF; Figure_003: 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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2024-09-30
18:26
Search for heavy pseudoscalar and scalar bosons decaying to top quark pairs in proton-proton collisions at /CMS Collaboration
A search for heavy pseudoscalar or scalar bosons decaying to a top quark pair ($\mathrm{t\bar{t}}$) in final states with one or two charged leptons is presented, using $138\,\mathrm{fb}^{-1}$ of proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$ recorded by the CMS experiment at the CERN LHC. The invariant mass of the reconstructed $\mathrm{t\bar{t}}$ system and variables sensitive to its spin state are used to discriminate against the standard model $\mathrm{t\bar{t}}$ background. [...]
CMS-PAS-HIG-22-013.- Geneva : CERN, 2024 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_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; Figure_008: PDF; Figure_009: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Figure_010-c: PDF; Figure_010-d: PDF; Figure_010-e: PDF; Figure_010-f: 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; Figure_012-a: PDF; Figure_012-b: PDF; Figure_012-c: PDF; Figure_012-d: PDF; Figure_A001: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-09-27
15:03
Search for light pseudoscalar bosons produced in Higgs boson decays in the $4\tau$ and $2\mu2\tau$ final states in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A search for a pair of light pseudoscalar bosons ($\mathrm{a}_1$) produced from the decay of the $125~\mathrm{GeV}$ Higgs boson (H) is presented. The analysis examines decay modes where one $\mathrm{a}_1$ decays into a pair of tau leptons, and the other decays into either another pair of tau leptons or a pair of muons. [...]
CMS-PAS-SUS-24-002.- Geneva : CERN, 2024 Figure_001: PDF; Figure_002: 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_007-c: PDF; Figure_007-d: PDF; Figure_008: PDF; Figure_009: 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_012-c: PDF; Figure_012-d: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-09-25
15:55
Combined effective field theory interpretation of Higgs boson, electroweak vector boson, top quark, and multi-jet measurements /CMS Collaboration
Constraints on the Wilson coefficients (WCs) corresponding to dimension-six operators of the standard model effective field theory (SMEFT) are determined from a simultaneous fit to seven sets of CMS measurements probing Higgs boson, electroweak vector boson, top quark, and multi-jet production. The measurements of the electroweak precision observables at LEP and SLC are also included and provide complementary constraints to those from CMS. [...]
CMS-PAS-SMP-24-003.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: 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; Figure_014: PDF; Figure_015: PDF; Figure_016: PDF; Figure_A001-a: PDF; Figure_A001-b: PDF; Figure_A001-c: PDF; Figure_A002: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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