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CMS Physics Analysis Summaries

Últimas adquisiciones:
2015-09-02
10:45
Measurement of the ttbar production cross section in the emu channel in pp collisions at 7 and 8 TeV /CMS Collaboration
The inclusive cross section for top quark pair production is measured in proton-proton collisions at $\sqrt{s} = 7\rm~TeV$ and $\sqrt{s} = 8\rm~TeV$ with the CMS experiment at the CERN LHC using the full data samples collected in 2011 and 2012. The measurement is performed with events containing an opposite charge electron-muon pair. The cross sections are extracted using a binned likelihood fit to multi-differential final state distributions related to identified b quark and other jets in the event. [...]
CMS-PAS-TOP-13-004.- Geneva : CERN, 2015 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; 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-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_009-d: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Figure_011: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Fulltext in PDF: PDF;

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2015-09-02
09:15
Measurement of the inclusive and differential tt production cross sections in lepton + jets final states at 13 TeV /CMS Collaboration
The total inclusive and the normalized differential cross sections for the production of top quark pairs in proton-proton collisions at 13\,TeV are measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 42\,pb$^{-1}$. The measurements are performed in the l+jets decay channels with an electron or a muon in the final state. [...]
CMS-PAS-TOP-15-005.- Geneva : CERN, 2015 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_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_005-c: PDF; Figure_005-d: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Fulltext in PDF: PDF;

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2015-09-01
11:17
Evidence for the electroweak Z gamma production in association with two jets and a search for anomalous quartic gauge couplings in pp collisions at sqrts = 8 TeV /CMS Collaboration
Evidence for electroweak associated production of a \Z boson, a photon and two jets, where the \Z boson decays into electron or muon pairs, is presented. The measurement is based on a sample of proton-proton collisions collected by the CMS detector at a center of mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7\fbinv. [...]
CMS-PAS-SMP-14-018.- Geneva : CERN, 2015 Figure_001: PNG; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Fulltext in PDF: PDF;

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2015-08-31
15:24
Search for Narrow Resonances using the Dijet Mass Spectrum with 40 pb^-1 of pp Collisions at sqrts=13 TeV /CMS Collaboration
A search for narrow dijet resonances in proton-proton (pp) collisions at $\sqrt{s}=13$ TeV is presented. The dijet mass distribution of the two leading jets is measured with the CMS detector. The data used correspond to an integrated luminosity of 42 pb$^{-1}$ from Run 2 of the LHC. The pseudorapidity separation of the two jets is required to satisfy $|\Delta\eta_{\text{jj}}|<1.3$ with each jet inside the region $|\eta| < 2.5$. [...]
CMS-PAS-EXO-15-001.- Geneva : CERN, 2015 Figure_001: PDF; Figure_002-a: PNG; Figure_002-b: PNG; Figure_002-c: PNG; Figure_002-d: PNG; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Fulltext in PDF: PDF;

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2015-08-30
22:52
First measurement of the differential cross section for ttbar production in the dilepton final state at sqrts = 13 TeV /CMS Collaboration
Normalized differential top quark pair ($\mathrm{t \bar t}$) production cross sections are measured in proton-proton collisions at a centre-of-mass energy of 13 TeV at the CERN LHC. The data were recorded in 2015 with the CMS detector and correspond to an integrated luminosity of 42 $\mathrm{pb^{-1}}$. [...]
CMS-PAS-TOP-15-010.- Geneva : CERN, 2015 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_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Fulltext in PDF: PDF;

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2015-08-27
17:39
Search for SUSY with Higgs in the diphoton final state using the razor variables /CMS Collaboration
A search for Higgs bosons in decays of supersymmetric particles is presented, using the LHC proton-proton collision data collected by the CMS experiment at a center-of-mass energy $\sqrt{s}=8$~TeV and corresponding to an integrated luminosity of $19.8$ fb$^{-1}$. Higgs bosons are reconstructed in diphoton final states in association with at least one jet. [...]
CMS-PAS-SUS-14-017.- Geneva : CERN, 2015 Figure_001: 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_004-a: PDF; Figure_004-b: PDF; Fulltext in PDF: PDF;

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2015-08-26
14:46
Search for dark matter and compressed mass-spectra supersymmetry with the vector boson fusion topology in pp collisions at sqrt(s) = 8 TeV /CMS Collaboration
The first search for dark matter candidate production through pure electroweak vector boson fusion processes is presented. Events with two jets in the vector boson fusion topology and large missing transverse momentum are analyzed using data from proton-proton collisions at $\sqrt{s} = 8$ TeV collected with the CMS detector. [...]
CMS-PAS-SUS-14-019.- Geneva : CERN, 2015 Figure_001-a: PNG; Figure_001-b: PNG; Fulltext in PDF: PDF;

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2015-08-22
19:06
Search for lepton-flavour-violating decays of the Higgs boson to etau and emu at sqrt(s)=8 TeV /CMS Collaboration
A direct search for lepton-flavour-violating decays of a Higgs boson ($m_{\textrm{H}}$ = 125 GeV) is described. The search is performed for the $\textrm{H} \rightarrow \textrm{e} \tau_{\mu}$, $\textrm{H} \rightarrow \textrm{e} \tau_{h}$, and $\textrm{H} \rightarrow \textrm{e} \mu$ decays, where $\tau_{h}$ and $\tau_{\mu}$ are taus reconstructed in the hadronic and muonic decay channels, respectively. [...]
CMS-PAS-HIG-14-040.- Geneva : CERN, 2015 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_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: PDF; Figure_005: PNG; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_007: PDF; Figure_008: PNG; Fulltext in PDF: PDF;

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2015-08-18
22:34
Measurement of the differential ttbar production cross section for high-pt top quarks in e/mu+jets final states at 8 TeV /CMS Collaboration
The differential top-antitop quark production cross section is measured for top quarks with high transverse momentum in $\mathrm{pp}$ collisions at a center-of-mass energy of 8 TeV. The data sample was collected with the CMS detector during 2012 and corresponds to an integrated luminosity of $19.7 \pm 0.5$ fb$^{-1}$. [...]
CMS-PAS-TOP-14-012.- Geneva : CERN, 2015 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_002-f: 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; Figure_004-e: PDF; Figure_004-f: PDF; Figure_005: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Fulltext in PDF: PDF;

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2015-08-18
17:42
Search in two-dimensional mass space for T'T' to W'b W' b in the dilepton final state in proton-proton collisions at 8 TeV /CMS Collaboration
A search for $\mathrm{T'\bar{T'}\rightarrow W'^{+}b W'^{-}\bar{b}}$ in the dilepton final state is presented using pp collision data recorded by the CMS detector corresponding to 19.7 fb$^{-1}$ of integrated luminosity. The analysis is based on a two-dimensional mass reconstruction of the $\mathrm{T'\bar{T'}}$ system performed without assumptions about the underlying theory except the event topology. No significant excess over the standard model predictions is observed. We set 95$\%$ confidence level upper limits on a simplified little Higgs model..
CMS-PAS-B2G-12-025.- Geneva : CERN, 2015 Figure_001: 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: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Fulltext in PDF: PDF;

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