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CMS Physics Analysis Summaries

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2024-07-24
14:41
Development of systematic-aware neural network trainings for binned-likelihood-analyses at the LHC /CMS Collaboration
We demonstrate a neural network training, capable of accounting for the effects of systematic variations of the utilized data model in the training process and describe its extension towards neural network multiclass classification. Trainings for binary and multiclass classification with seven output classes are performed, based on a comprehensive data model with 86 nontrivial shape-altering systematic variations, as used for a previous measurement. [...]
CMS-PAS-MLG-23-005.- Geneva : CERN, 2024 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: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_009: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-07-24
12:00
Search for $t$-channel scalar and vector leptoquark exchange in the high mass dimuon and dielectron spectrum in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$ /CMS Collaboration
A search for $t$-channel exchange of leptoquarks (LQs) is performed using proton-proton collision data collected at $\sqrt{s}=13~\mathrm{TeV}$ with the CMS detector at the CERN LHC. The data correspond to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-EXO-22-013.- 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: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: 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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2024-07-23
15:26
Measurement of double differential and total charm cross sections at 7 TeV /CMS Collaboration
The production cross section of D$^{*\pm}$ mesons in proton-proton collisions is measured at a center-of-mass energy of $7\,{\rm TeV}$ with the CMS detector. Special low-$p_T$ tracking and low-pileup data are used, corresponding to an integrated luminosity of $3.0\,{\rm nb}^{-1}$. A double-differential cross-section measurement is performed covering D$^{*\pm}$ transverse momentum $p_{\rm T}$ down to $1\,{\rm GeV}$ and a rapidity range of $|y|<2.5$. The total charm-quark pair cross section, $\sigma_{{\rm c\bar c},{\rm tot}}(7\,{\rm TeV}) = 9.39^{+1.35}_{-1.49}\,{\rm mb}$ is extracted from the D$^{*\pm}$-meson cross section. For this purpose, the results are combined with published measurements by the LHCb Collaboration covering rapidities larger than 2.5, and then extrapolated to the full kinematical phase space by means of a new data-driven procedure that includes a complete treatment of charm-fragmentation nonuniversality. This combination probes the largest phase space for charm production ever explored at LHC, resulting in the smallest extrapolation factor, which minimizes the impact of theoretical uncertainties. The resulting cross sections are compared to NLO+NLL and NNLO-QCD predictions and to the results from other experiments..
CMS-PAS-BPH-22-007.- Geneva : CERN, 2024 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_004-d: PDF; Figure_004-e: 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_005-g: PDF; Figure_005-h: PDF; Figure_005-i: PDF; Figure_005-j: PDF; Figure_005-k: PDF; Figure_006: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-07-22
23:40
Search for Higgs boson production in association with a charm quark in the diphoton decay channel /CMS Collaboration
This note presents the first search for the associated production of a Higgs boson with a charm quark (cH), focusing on the diphoton decay channel of the Higgs boson. This process provides a unique opportunity to probe the Higgs boson-charm quark coupling. [...]
CMS-PAS-HIG-23-010.- Geneva : CERN, 2024 Figure_001: PDF; Figure_002: 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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2024-07-22
14:52
Search for nonresonant new physics in high-mass dilepton events in association with b-tagged jets /CMS Collaboration
A search for nonresonant new physics phenomena in high-mass dilepton events produced in association with b-tagged jets is performed using the data collected by the CMS experiment at the CERN LHC at a center-of-mass energy of $13~\mathrm{TeV}$. The analysis considers two EFT-based models with 6-dimensional operators involving four fermion contact interactions between two leptons (electrons and muons) and $\mathrm{b}$ or $\mathrm{s}$ quarks ($\mathrm{bb\ell\ell}$ and $\mathrm{bs\ell\ell}$). [...]
CMS-PAS-EXO-23-010.- Geneva : CERN, 2024 Figure_001: PNG; Figure_002-a: PNG; Figure_002-b: PNG; 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-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_007-d: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-07-22
14:52
Measurement of $\mathrm{WZ}\gamma$ production and constraints on new physics scenarios in proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$ /CMS Collaboration
A measurement of the $\mathrm{WZ}\gamma$ triboson production predicted by the standard model is reported. The analysis uses a data sample of proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13\,\mathrm{TeV}$ recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of $138\,\mathrm{fb}^{-1}$. [...]
CMS-PAS-SMP-22-018.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_002-d: 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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2024-07-22
13:32
Combination and interpretation of fiducial differential Higgs boson production cross sections at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
The Higgs boson fiducial differential production cross sections are sensitive probes for the presence of physics beyond the standard model. New physics may contribute to the gluon-gluon fusion loop, the dominant Higgs boson production mechanism at the LHC, and manifest itself as deviations from the expected standard model distributions. [...]
CMS-PAS-HIG-23-013.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: 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_006-c: PDF; Figure_006-d: PDF; Figure_006-e: PDF; Figure_006-f: PDF; Figure_006-g: PDF; Figure_006-h: PDF; Figure_006-i: PDF; Figure_006-j: PDF; Figure_006-k: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010: 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_013-c: PDF; Figure_013-d: PDF; Figure_014-a: PDF; Figure_014-b: PDF; Figure_014-c: PDF; Figure_015-a: PDF; Figure_015-b: PDF; Figure_015-c: PDF; Figure_015-d: PDF; Figure_016-a: PDF; Figure_016-b: PDF; Figure_016-c: PDF; Figure_016-d: PDF; Figure_016-e: PDF; Figure_016-f: PDF; Figure_016-g: PDF; Figure_016-h: PDF; Figure_016-i: PDF; Figure_016-j: PDF; Figure_016-k: PDF; Figure_016-l: PDF; Figure_016-m: PDF; Figure_016-n: PDF; Figure_016-o: PDF; Figure_016-p: PDF; Figure_017-a: PDF; Figure_017-b: PDF; Figure_017-c: PDF; Figure_017-d: PDF; Figure_017-e: PDF; Figure_017-f: PDF; Figure_017-g: PDF; Figure_017-h: PDF; Figure_017-i: PDF; Figure_017-j: PDF; Figure_017-k: PDF; Figure_017-l: PDF; Figure_017-m: PDF; Figure_017-n: PDF; Figure_017-o: PDF; Figure_018: PDF; Figure_019-a: PDF; Figure_019-b: PDF; Figure_019-c: PDF; Figure_019-d: PDF; Figure_020-a: PDF; Figure_020-b: PDF; Figure_020-c: PDF; Figure_020-d: PDF; Figure_021-a: PDF; Figure_021-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-07-21
20:20
CMS luminosity measurement for nucleus-nucleus collisions at 5.02 TeV in Run 2 /CMS Collaboration
The measurements of the luminosity delivered to the CMS experiment during the lead-lead (PbPb) data taking in 2015 and 2018 are presented. The nucleon-nucleon collisions were recorded at a center-of-mass energy of $5.02~\mathrm{TeV}$, with the 2018 data sample being three times larger than that of 2015. [...]
CMS-PAS-LUM-20-002.- Geneva : CERN, 2024 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: 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-a: PDF; Figure_007-b: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_008-e: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_009-d: PDF; Figure_010: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-07-20
18:14
Search for heavy scalar resonances decaying to a pair of Z bosons in the 4-lepton final state at 13 TeV /CMS Collaboration
A search for a heavy scalar resonance decaying to two Z bosons and subsequently to four leptons is presented, where the leptons can be electrons or muons. The results are based on the proton-proton collision data collected by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 $\text{fb}^{-1}$. [...]
CMS-PAS-HIG-24-002.- Geneva : CERN, 2024 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-a: PDF; Figure_006-b: 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-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; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-07-20
16:01
Search for DM in association with b-quark and lepton pairs /CMS Collaboration
A search is performed for dark matter produced in association with bottom quark and lepton pairs in data collected by the CMS detector at the LHC, corresponding to $138~\mathrm{fb}^{-1}$ of proton-proton collisions at a center-of-mass energy of $13~\mathrm{TeV}$. The analysis explores for the first time at the LHC the associated production of a bottom quark-antiquark pair and a new neutral Higgs boson that subsequently decays into a Z boson and a pseudoscalar, where the latter acts as dark matter mediator in the context of the 2HDM+$a$ model. [...]
CMS-PAS-SUS-23-018.- 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_004-d: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_007-d: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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