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More About the Multiplicity of Symmetric Three Jet Events / Hamacher, K ; Klapp, O ; Langefeld, P ; Siebel, M /DELPHI Collaboration
The measurement of the hadron multiplicity in mirror symmetric threejet events is compared to recent theoretical calculations.Jets are defined with the Cambridge algorithm.From this data in comparison to the hadronic multiplicity in \epem--annihilation a determination of the gluon to quarkcolour factor ratio yields:\begin{equation*}\frac{C_A}{C_F}= 2.221 \pm 0.032(\mathrm{stat}) \pm 0.047(\mathrm{exp})\pm 0.058(\mathrm{hadc}) \pm 0.075(\mathrm{theo}) \quad .\end{equation*}A measurement of the hadron multiplicity in equivalent gluon gluon events asfunction of the energy scale is presented.The increase with energy scale of the hadron multiplicity in gluongluon events is observed to be about twice as strong as inquark antiquark events. This presents very direct evidence for thetriple gluon vertex and the higher colour charge of the gluon..
CERN-OPEN-2000-134; DELPHI-2000-118-CONF-417.- Geneva : CERN, 2001 - 14 p. Access to fulltext document: PDF; External link: Published version
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.e-page 388
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Inclusive production of neutral vector mesons in hadronic Z decays / Böhrer, A (CERN)
Data taken with ALEPH at LEP are presented on the inclusive production of the neutral mesons $\rho^0$(770), $\omega$(782), $\mathrm{K^{*0}}$(892), $\phi$(1020) in hadronic $\mathrm{Z^0}$ decays and compared to Monte Carlo model predictions. Bose-Einstein effects are found to be important in extracting a reliable value for the $\rho^0$ production rate; an average multiplicity of $1.45 \pm 0.22$ per event is obtained. [...]
CERN-OPEN-99-141; CERN-ALEPH-PUB-95-012; EPS-4509.- Geneva : CERN, 1995 Miscellaneous ALEPH PUBlications Access to fulltext document: PDF;
In : 25th International Symposium on Multiparticle Dynamics, Stará Lesná, Slovakia, 12 - 16 Sep 1995, pp.437-446
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Assessing the speed of sound in Pb–Pb collisions with ALICE /ALICE collaboration
Ultrarelativistic heavy-ion collisions produce a state of hot and dense strongly interacting QCD matter called quark--gluon plasma (QGP). On an event-by-event basis, the volume of the QGP in ultra-central collisions is mostly constant, while its total entropy can vary significantly, leading to variations in the temperature of the system. [...]
ALICE-PUBLIC-2024-002.- Geneva : CERN, 2024 updated citations: PDF;
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4.
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A precision measurement of the W boson decay branching fractions in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$ /CMS Collaboration
The leptonic and inclusive hadronic decay branching fractions of the W boson are studied using $35.9~\mathrm{fb}^{-1}$ of proton-proton collision data collected at $\sqrt{s}=13~\mathrm{TeV}$ during the 2016 run of the CMS experiment. Events characterized by the production of two W bosons, or of a W boson accompanied by jets, are selected. [...]
CMS-PAS-SMP-18-011.- Geneva : CERN, 2021 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_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_003-g: PDF; Figure_003-h: 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_004-h: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)
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Simultaneous measurements of the $t\bar{t}$, $W^+W^-$, and $Z/\gamma^* \rightarrow \tau^+\tau^-$ production cross-sections in $pp$ collisions at $\sqrt{s} = 7\,\mathrm{TeV}$ with the ATLAS detector / Limosani, A (Sydney U.)
Simultaneous measurements of the $t\bar{t}$, $W^+W^-$, and $Z/\gamma^{*}\rightarrow\tau\tau$ production cross-sections using an integrated luminosity of $4.6\,\mathrm{fb}^{-1}$ of $pp$ collisions at $\sqrt{s} = 7\,\mathrm{TeV}$ collected by the ATLAS detector at the LHC are presented. [...]
ATL-PHYS-PROC-2014-171. - 2016. - 7 p.
Original Communication (restricted to ATLAS) - Full text - Full text
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Higgs boson production in association with top quarks in final states with electrons, muons, and hadronically decaying tau leptons at $\sqrt{s} = 13~\mathrm{TeV}$ /CMS Collaboration
The rate for Higgs ($\mathrm{H}$) bosons production in association with either one ($\mathrm{t}\mathrm{H}$) or two ($\mathrm{t}\bar{\mathrm{t}}\mathrm{H}$) top quarks is measured in final states with multiple electrons, muons, and hadronically decaying $\tau$ leptons, using proton-proton collision data recorded at a center-of-mass energy of $13~\mathrm{TeV}$ by the CMS experiment. The analyzed data set corresponds to an integrated luminosity of $137~\mathrm{fb}^{-1}$. [...]
CMS-PAS-HIG-19-008.- 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_002-e: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: 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_009-c: 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_012: PDF; Figure_013-a: PDF; Figure_013-b: PDF; Figure_014-a: PDF; Figure_014-b: PDF; Figure_014-c: PDF; Figure_014-d: PDF; Figure_015-a: PDF; Figure_015-b: PDF; Figure_016-a: PDF; Figure_016-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)
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Measurement of the WW cross section pp collisions at sqrt(s)=13 TeV /CMS Collaboration
A measurement of the $\mathrm{W}^{+}\mathrm{W}^{-}$ cross section in $\mathrm{pp}$ collisions at $13\,\mathrm{TeV}$ is presented. The data were collected with the CMS detector at the LHC in 2015, and correspond to an integrated luminosity of $2.3 \pm 0.1\,\mathrm{fb}^{-1}$. [...]
CMS-PAS-SMP-16-006.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Fulltext in PDF: PDF;
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Measurement of the inclusive $\mathrm{t\bar{t}}$ cross section in final states with one lepton and additional jets at 5.02 TeV with 2017 data /CMS Collaboration
A measurement of the top quark pair production cross section in proton-proton collisions at a centre-of-mass energy of 5.02 TeV is presented. The data were collected in a low-energy and low-intensity LHC run in autumn 2017, and correspond to an integrated luminosity of 302 $\mathrm{pb}^{-1}$. [...]
CMS-PAS-TOP-23-005.- Geneva : CERN, 2024 Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003-a: PNG; Figure_003-b: PNG; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)
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9.
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Measurement of the Ratio of Branching Fractions $\cal{B}\mathrm{(B^{\pm} \rightarrow J/\psi \pi^{\pm})/\cal{B}\mathrm{(B^{\pm} \rightarrow J/\psi K^{\pm})}}$ at $\sqrt{\mathrm{s}}=7~\mathrm{TeV}$ with the LHCb Detector /LHCb Collaboration
The ratio of the branching fractions of the decays $\mathrm{B^{\pm} \rightarrow J/\psi \pi^{\pm}}$ and $\mathrm{B^{\pm} \rightarrow J/\psi K^{\pm}}$ has been measured with the LHCb detector in proton-proton collisions at a centre-of-mass energy of $\sqrt{\mathrm{s}}=7~\mathrm{TeV}$. The analysis is based on a data sample of 37~pb$^{-1}$ collected between April and November 2010 at the Large Hadron Collider. [...]
LHCb-CONF-2011-030; CERN-LHCb-CONF-2011-030.- Geneva : CERN, 2011 Fulltext: Figs-CONF-2011-030 - ZIP; LHCb-CONF-2011-030 - PDF;
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10.
(72)
Measurement of the tau lepton polarization in Z boson decays /CMS Collaboration
The polarization of $\tau$ leptons is measured using leptonic and hadronic $\tau$ lepton decays in $\mathrm{Z}\rightarrow\tau\tau$ events. A sample of $\mathrm{pp}$ collisions of an integrated luminosity of $36.3\,\mathrm{fb}^{-1}$ at $\sqrt{s}=13\,\mathrm{TeV}$ is used. [...]
CMS-PAS-SMP-18-010.- Geneva : CERN, 2023 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_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_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_006: 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-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_008-e: PDF; Figure_008-f: PDF; Figure_010: PDF; Figure_011: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)
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