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CMS Physics Analysis Summaries

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2020-05-27
18:53
Extraction and validation of a set of HERWIG 7 tunes from CMS underlying-event measurements /CMS Collaboration
This note presents a new set of parameters ("tunes") for the underlying-event model of the HERWIG$\,$7 event generator. The parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG$\,$7, and are obtained from a fit to underlying-event and minimum-bias data collected by the CMS experiment at $\sqrt{s}=$ 0.9, 7, and 13 TeV. [...]
CMS-PAS-GEN-19-001.- Geneva : CERN, 2020 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-a: PDF; Figure_005-b: 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; Figure_007-c: PDF; Figure_007-d: PDF; Figure_008: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_009-d: 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_012-d: PDF; Figure_012-e: PDF; Figure_012-f: 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_015-e: PDF; Figure_015-f: PDF; Figure_016-a: PDF; Figure_016-b: PDF; Figure_017-a: PDF; Figure_017-b: PDF; Figure_017-c: PDF; Figure_018-a: PDF; Figure_018-b: PDF; Figure_018-c: PDF; Figure_018-d: 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; Figure_021-c: PDF; Figure_021-d: PDF; Figure_022-a: PDF; Figure_022-b: PDF; Figure_022-c: PDF; Figure_022-d: PDF; Figure_022-e: PDF; Figure_022-f: PDF; Figure_023-a: PDF; Figure_023-b: PDF; Figure_023-c: PDF; Figure_023-d: PDF; Fulltext in PDF: PDF;

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2020-05-26
09:22
Search for a low-mass dilepton resonance in Higgs boson decays to four-lepton final states at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A generic search for a low mass dilepton resonance in Higgs boson decays is conducted in the four-lepton final state. The decay is assumed to proceed via two new particles (beyond the standard model), or one new particle in association with a Z boson. [...]
CMS-PAS-HIG-19-007.- Geneva : CERN, 2020 Figure_001: PNG; Figure_002-a: PDF; Figure_002-b: 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-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Fulltext in PDF: PDF;

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2020-05-25
20:12
Search for decays of the $125~\mathrm{GeV}$ Higgs boson into a Z boson and a $\rho$ or $\phi$ meson /CMS Collaboration
The decays of the $125~\mathrm{GeV}$ Higgs boson into a Z boson and a $\rho^0(770)$ or $\phi(1020)$ meson are searched for using proton-proton collision data collected by the CMS experiment at the LHC from 2016 to 2018 at $\sqrt{s}=13~\mathrm{TeV}$. The analysed data set corresponds to an integrated luminosity of $137~\mathrm{fb}^{-1}$. [...]
CMS-PAS-HIG-19-012.- Geneva : CERN, 2020 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_002: PDF; Figure_003: 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; Fulltext in PDF: PDF;

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2020-05-25
18:30
Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
An indirect measurement of the Higgs Yukawa coupling to the top quark is presented using pp collision at $\sqrt{s}=13~\mathrm{TeV}$ with an integrated luminosity of $137~\mathrm{fb}^{-1}$ recorded by the CMS detector. The coupling strength with respect to the standard model value, $Y_\mathrm{t}$, is determined from kinematic distributions in $\mathrm{t\bar{t}}$ production final states containing ee, $\mu\mu$, or e$\mu$ pairs. [...]
CMS-PAS-TOP-19-008.- Geneva : CERN, 2020 Figure_001: PNG; 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: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Figure_010-c: PDF; Figure_010-d: PDF; Fulltext in PDF: PDF;

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2020-05-25
17:24
Differential measurements of the Drell--Yan process in the muon channel in pPb collisions at $\sqrt{s_{_{\text{NN}}}}=8.16~\mathrm{TeV}$ /CMS Collaboration
Measurements of differential cross sections for the Drell--Yan process, including Z boson production, in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of $8.16~\textrm{TeV}$ are presented, in the muon channel. A data sample recorded with the CMS detector at the LHC is used, corresponding to an integrated luminosity of $173.4 \pm 6.1 \textrm{nb}^{-1}$. [...]
CMS-PAS-HIN-18-003.- Geneva : CERN, 2020 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_001-g: 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_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_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_004-d: PDF; Figure_004-e: PDF; Figure_004-f: PDF; Figure_004-g: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Fulltext in PDF: PDF;

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2020-05-25
13:21
Studies of parton-medium interactions using Z-tagged charged particles in PbPb collisions at $\sqrt{s_\mathrm{NN}}=5.02~\mathrm{TeV}$ /CMS Collaboration
The first measurements of Z boson-tagged charged hadron spectra are reported in PbPb collisions at $\sqrt{s_\mathrm{NN}}=5~\mathrm{TeV}$, using the PbPb collision data recorded by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of $1.7~\mathrm{nb}^{-1}$. Hadronic collision data with at least one Z boson with transverse momentum $p_\mathrm{T} > 30~\mathrm{GeV}/c$ are analyzed. [...]
CMS-PAS-HIN-19-006.- Geneva : CERN, 2020 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Fulltext in PDF: PDF;

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2020-05-25
12:58
Search for supersymmetry in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ in final states with high-momentum Z bosons and missing transverse momentum /CMS Collaboration
A search for physics beyond the standard model in events with highly Lorentz-boosted Z bosons and missing transverse momentum is presented. The analysed proton-proton collision data, corresponding to an integrated luminosity of $137~\mathrm{fb}^{-1}$, were recorded at $\sqrt{s}=13~\mathrm{TeV}$ by the CMS experiment. [...]
CMS-PAS-SUS-19-013.- Geneva : CERN, 2020 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008: PDF; Figure_009: PDF; Fulltext in PDF: PDF;

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2020-05-25
12:14
Measurement of the differential Z+jets and $\gamma$+jets cross sections, their ratio, and collinear Z boson emission in pp collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
Measurements of the differential cross sections of Z+jets, $\gamma$+jets, and their ratio, are presented as a function of the boson transverse momentum. Measurements are also presented of the Z boson angular distribution in events where the Z boson is emitted collinear to a jet with very high transverse momentum. [...]
CMS-PAS-SMP-19-010.- Geneva : CERN, 2020 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_004-c: PDF; Figure_004-d: PDF; Fulltext in PDF: PDF;

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2020-05-25
11:49
Observation of the electroweak production of W$\gamma$ in association with two jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A measurement of the electroweak (EW) production of a W boson and a photon in association with two jets in proton-proton collisions, where the W boson decays leptonically, is presented. Events are selected by requiring one identified electron or muon, missing transverse momentum, one photon, and two jets with a large dijet mass and a large rapidity separation. [...]
CMS-PAS-SMP-19-008.- Geneva : CERN, 2020 Figure_001-a: PNG; Figure_001-b: PNG; Figure_001-c: PNG; Figure_001-d: PNG; 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; Fulltext in PDF: PDF;

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2020-05-25
11:15
Relative cross sections of the ${\rm B_c^+(2S)}$ and ${\rm B_c^{*+}(2S)}$ states with respect to the ${\rm B_c^+}$ state in proton-proton collisions at $\sqrt{s} = 13$ TeV /CMS Collaboration
The ${\rm B_c^+(2S)}$ to ${\rm B_c^+}$ and ${\rm B_c^{*+}(2S)}$ to ${\rm B_c^+}$ cross section ratios, as well as the ${\rm B_c^{*+}(2S)}$ to ${\rm B_c^+(2S)}$ cross section ratio, are measured in proton-proton collisions at $\sqrt{s} = 13$ TeV, using a data sample collected by the CMS experiment, corresponding to an integrated luminosity of 143 fb$^{-1}$. The three measurements are made in the ${\rm B_c^+}$ phase space window defined by transverse momentum $p_{\rm T} > 15$ GeV and absolute rapidity $|y| < 2.4$, with the excited ${\rm B_c^{(*)+}(2S)}$ states reconstructed in their ${\rm B_c^+} \pi^+ \pi^-$ decay. [...]
CMS-PAS-BPH-19-001.- Geneva : CERN, 2020 Figure_001: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Fulltext in PDF: PDF;

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