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CMS Physics Analysis Summaries

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2024-06-03
22:51
Measurement of event shapes in minimum bias events from $\mathrm{p}\mathrm{p}$ collisions at $13~\mathrm{TeV}$ /CMS Collaboration
This note presents a measurement of event-shape variables using a data sample of low-pileup inelastic proton-proton collisions collected by the CMS detector at a centre-of-mass energy of $13~\mathrm{TeV}$, corresponding to an integrated luminosity of $64~\mu\text{b}^{-1}$. A number of observables related to the overall distribution of charged particles in the collisions is corrected for detector effects and compared to simulations. [...]
CMS-PAS-SMP-23-008.- 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_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_A001-a: PDF; Figure_A001-b: PDF; Figure_A002-a: PDF; Figure_A002-b: PDF; Figure_A003: PDF; Figure_A004-a: PDF; Figure_A004-b: PDF; Figure_A004-c: PDF; Figure_A004-d: PDF; Figure_A005-a: PDF; Figure_A005-b: PDF; Figure_A005-c: PDF; Figure_A005-d: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-06-03
22:02
Angular analysis of the $B^0 \to K^{*0}(892) \mu^+ \mu^-$ decay at $\sqrt{s}$ = 13 TeV /CMS Collaboration
The full set of optimised CP-averaged observables is measured in the angular analysis of the decay ${\mathrm{B}^0} \to \mathrm{K^{\ast 0}(892)} \mu^+\mu^-$ using a sample of proton-proton collisions at $\sqrt{s}=13$ TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of ${140}~\mathrm{fb^{-1}}$. The analysis is performed in bins of the invariant mass squared of the dimuon system. [...]
CMS-PAS-BPH-21-002.- Geneva : CERN, 2024 Figure_001: 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; Figure_003-c: PDF; Figure_003-d: PDF; Figure_003-e: PDF; Figure_003-f: PDF; Figure_003-g: PDF; Figure_003-h: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-06-03
20:45
Search for heavy neutral resonances decaying to $\tau$ lepton pairs in $\mathrm{pp}$ collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A search for heavy neutral gauge bosons ($\mathrm{Z}'$) decaying to two tau leptons is performed in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ at the CERN LHC. The data were collected with the CMS detector and correspond to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-EXO-21-016.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_001-e: PDF; Figure_001-f: 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; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-06-03
15:43
Dependence of two-particle azimuthal correlations on the forward rapidity gap width in pPb collisions at $\sqrt{s_{NN}}=8.16~\mathrm{TeV}$ /CMS Collaboration
Measurements of the Fourier coefficients ($V_{n\Delta}$) of the azimuthal distributions of charged hadron pairs produced in pPb collisions at 8.16 TeV are presented as functions of the forward rapidity gap width ($\Delta\eta^{\rm{F}} $) for events in which particle production is concentrated in the direction of the outgoing Pb beam. The sample includes contributions from pomeron and photon induced processes as well as nondiffractive events. [...]
CMS-PAS-HIN-22-004.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: 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; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-06-02
23:34
Azimuthal dependence of hyperon polarization along the beam direction in pPb collisions at $\sqrt{s_{_{NN}}}$ = 8.16 TeV /CMS Collaboration
The polarization of the $\Lambda$ and $\overline{\Lambda}$ hyperons along the beam ($z$) direction, $P_z$, has been measured for the first time in pPb collisions at the LHC with $\sqrt{s_{_{NN}}}$ = 8.16 TeV data collected by the CMS experiment. Assuming the largest contributions to $P_z$ come from collective flow, this polarization can be characterized by the Fourier sine coefficients $P_{z,sn} = \langle P_{z}\sin(n\phi - n\Psi_{n}) \rangle$, where $\phi$ is the hyperon azimuthal emission angle and $\Psi_{n}$ is the $n$-th order flow plane angle. [...]
CMS-PAS-HIN-24-002.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-04-25
10:45
Measurement of azimuthal correlations among jets and determination of the strong coupling in pp collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A measurement is presented of the ratio observable $R_{\Delta\phi}(p_\mathrm{T})$ that provides a measure of the azimuthal correlations among jets with large transverse momentum $p_\mathrm{T}$. The $R_{\Delta\phi}(p_\mathrm{T})$ variable is defined as the ratio of the number of neighbouring jets in events with a 3-jet topology, enforced through an azimuthal angular separation of $2\pi/3<\Delta\phi<7\pi/8$, over the number of inclusive jets within the same jet $p_\mathrm{T}$ bin. [...]
CMS-PAS-SMP-22-005.- Geneva : CERN, 2023 Figure_001: PDF; Figure_002: PNG; 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; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-04-25
10:10
Measurements of the light-by-light scattering and the Breit--Wheeler processes, and searches for axion-like particles in ultraperipheral PbPb collisions at $\sqrt{s_\mathrm{NN}} = 5.02~\mathrm{TeV}$ /CMS Collaboration
Measurements of the light-by-light scattering (LbL, $\gamma\gamma\to\gamma\gamma$) and the Breit--Wheeler (B--W, $\gamma\gamma\to\mathrm{e}^+\mathrm{e}^-$) processes are reported in ultraperipheral PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV using a data sample corresponding to an integrated luminosity of $1.65~\mathrm{nb}^{-1}$. Events with a pair of exclusively produced photons or $\mathrm{e}^+\mathrm{e}^-$ are selected, each with transverse energy $E_\mathrm{T}^{\gamma,\mathrm{e}}>2~\mathrm{GeV}$, pseudorapidity $|\eta^{\gamma,\mathrm{e}}|<2.2$, pair invariant mass $m^{\gamma\gamma,\mathrm{ee}}> 5~\mathrm{GeV}$, pair transverse momentum $p_\mathrm{T}^{\gamma\gamma,\mathrm{ee}}<1~\mathrm{GeV}$, and pair azimuthal acoplanarity $A_\phi<0.01$. [...]
CMS-PAS-HIN-21-015.- 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_002-g: PDF; Figure_002-h: PDF; Figure_003: 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_006-c: PDF; Figure_006-d: PDF; Figure_006-e: PDF; Figure_006-f: PDF; Figure_006-g: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008: PDF; Figure_009: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-04-15
19:24
Search for dark matter produced in association with a single top quark or a top quark pair in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A search is performed for dark matter produced in association with top quarks using the data collected by the CMS detector at the LHC from proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to $138~\mathrm{fb}^{-1}$ of integrated luminosity. The analysis explores the production of dark matter particles in association with a single top quark or a pair of top quarks. [...]
CMS-PAS-EXO-22-014.- 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-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_004-d: 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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2024-04-12
19:43
{Measurement of the $Z(\nu\bar{\nu})+\gamma$ production cross section and search for anomalous neutral triple gauge couplings in pp collisions at $13~\mathrm{TeV}$} /CMS Collaboration
The measurement of the production cross section of a Z boson and a photon in the final state with one photon and large missing transverse momentum, and a search for the presence of neutral anomalous triple gauge couplings are presented. The results are based on data collected by the CMS experiment in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ during the 2016, 2017, and 2018 LHC running periods, corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$. [...]
CMS-PAS-SMP-22-009.- Geneva : CERN, 2024 Figure_001: PNG; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PNG; Figure_005-b: PNG; Figure_006-a: PNG; Figure_006-b: PNG; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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2024-04-11
22:43
Energy scaling behavior of intrinsic transverse momentum in Drell-Yan events /CMS Collaboration
We present an analysis of intrinsic transverse momentum by studying the dilepton transverse momentum in Drell-Yan events. Utilizing widely adopted event generators and data from fixed-target experiments, the Tevatron, and the LHC, our investigation spans three orders of magnitude in center-of-mass energy and two orders of magnitude in dilepton invariant mass. [...]
CMS-PAS-GEN-22-001.- Geneva : CERN, 2024 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)

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