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CMS Physics Analysis Summaries

Ostatnio dodane:
2016-09-23
22:21
Bounding the top quark width using final states with two charged leptons and two jets at $\sqrt{s}=13~\mathrm{TeV}$ /CMS Collaboration
A direct bound on the top quark decay width is presented, obtained by analysing $12.9~\mathrm{fb}^{-1}$ of proton-proton collision data collected at $\sqrt{s}=13~\mathrm{TeV}$ by the CMS experiment at the LHC. The measurement is performed by partially reconstructing the kinematics of top quark candidates from final states containing at least two charged leptons (electrons or muons) and at least two jets, where at least one jet is identified as stemming from the fragmentation and hadronization of a b quark. [...]
CMS-PAS-TOP-16-019.- Geneva : CERN, 2016 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_003-c: PDF; Figure_003-d: 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; Fulltext in PDF: PDF;

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2016-09-23
13:12
Strong suppression of $\varUpsilon$ excited states in PbPb collisions at $\sqrt{s_{NN}} = 5.02~\mathrm{TeV}$ /CMS Collaboration
Measurements of $\varUpsilon$ mesons, produced in pp and PbPb collisions at $\sqrt{s_{NN}} = 5.02~\mathrm{TeV}$ and reconstructed via their dimuon decay channel, are reported using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states to the ground state in both PbPb and pp collisions at the same energy. [...]
CMS-PAS-HIN-16-008.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004: PDF; Fulltext in PDF: PDF;

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2016-09-23
13:12
Study of $\mathrm{B}^+$ meson production in pp and PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}}=5.02~\mathrm{TeV}$ using exclusive hadronic decays /CMS Collaboration
The production cross section of the $\mathrm{B}^+$ meson, and of its charge conjugate, are measured via exclusive hadronic decays in pp and PbPb collisions at the center-of-mass energy $\sqrt{s_{_{\mathrm{NN}}}}=5.02~\mathrm{TeV}$ with the CMS detector at the LHC. The PbPb dataset used for this analysis corresponds to an integrated luminosity of $350.68~\mu\mathrm{b}^{-1}$. [...]
CMS-PAS-HIN-16-011.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002: PNG; Figure_003: PNG; Fulltext in PDF: PDF;

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2016-09-23
10:56
Relative modification of prompt $\psi(2\textrm{S})$ and $\textrm{J}/\psi$ yields from pp to PbPb collisions at $\sqrt{s_{NN}} = 5.02~\mathrm{TeV}$ /CMS Collaboration
The ratios between the yields of prompt $\psi$(2S) and $\textrm{J}/\psi$ mesons, reconstructed via their decays into muon pairs, are compared in PbPb and pp collisions at $\sqrt{s_{NN}} = 5.02\,\mathrm{TeV}$. The analysis is based on PbPb and pp data samples collected by the CMS experiment at the LHC in late 2015, corresponding to integrated luminosities of $464\,\mu\textrm{b}^{-1}$ and $25.8\,\mathrm{pb}^{-1}$, respectively. [...]
CMS-PAS-HIN-16-004.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Fulltext in PDF: PDF;

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2016-09-23
10:45
Study of Isolated-Photon + Jet Correlations in PbPb and pp Collisions at $\sqrt{s_{NN}} = 5.02\:\mathrm{TeV}$ /CMS Collaboration
Measurements of correlations in isolated-photon and jet pairs in pp and PbPb collisions at $\sqrt{s_{NN}} = 5.02~\mathrm{TeV}$ are reported. Jets are reconstructed with an anti-$k_\mathrm{T}$ clustering algorithm with a distance parameter of 0.3. [...]
CMS-PAS-HIN-16-002.- Geneva : CERN, 2016 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Fulltext in PDF: PDF;

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2016-09-23
09:47
Search for heavy resonances decaying to top and vector-like quarks in the all-hadronic channel at $\sqrt{s} = 13~\mathrm{TeV}$ /CMS Collaboration
Many models predicting a heavy neutral spin-1 resonance also predict the existence of vector-like quarks. Such a hypothetical resonance might then predominantly decay to these heavy quark partners rather than to standard model particles. [...]
CMS-PAS-B2G-16-013.- Geneva : CERN, 2016 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_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_005-e: PDF; Figure_005-f: PDF; Figure_005-g: PDF; Figure_005-h: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Fulltext in PDF: PDF;

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2016-09-20
01:19
$D^{0}$ meson $v_{n}$ harmonics in PbPb collisions at $5.02~\mathrm{TeV}$ /CMS Collaboration
The Fourier coefficients $v_{2}$ and $v_{3}$, which reflect the azimuthal anisotropy of $D^0$ meson, is measured with scalar-product method in PbPb collisions at $\sqrt{s_\mathrm{NN}} = 5.02~\mathrm{TeV}$ with CMS. The measurement is done in a wide $p_T$ range up to $40~\mathrm{GeV}/c$, for centrality classes 0-10$\%$, 10-30$\%$ and 30-50$\%$. [...]
CMS-PAS-HIN-16-007.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Fulltext in PDF: PDF;

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2016-09-20
00:05
Measurement of the $t\bar{t}\text{+}\gamma$ production cross-section in pp collisions at $\sqrt{s}=8~\mathrm{TeV}$ /CMS Collaboration
A measurement of the cross section for top quark pairs produced in association with a photon in proton-proton collisions at $\sqrt{s}=8~\mathrm{TeV}$ is presented. The analysis uses data, collected by the CMS detector at the LHC, corresponding to 19.7 $\text{fb}^{-1}$ of integrated luminosity. [...]
CMS-PAS-TOP-14-008.- Geneva : CERN, 1900 Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005: PDF; Figure_006: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_008: PDF; Figure_009: PDF; Fulltext in PDF: PDF;

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2016-09-19
23:56
Measurement of the jet mass distribution in boosted $\mathrm{t}\bar{\mathrm{t}}$ production at $\sqrt{s}=8~\mathrm{TeV}$ /CMS Collaboration
A first measurement is performed of the differential $\mathrm{t}\bar{\mathrm{t}}$ production cross section as a function of the leading jet mass in fully-merged top quark decays. Data collected with the CMS detector in pp collisions at $\sqrt{s}=8$ TeV are used, corresponding to an integrated luminosity of 19.7 fb$^{-1}$. [...]
CMS-PAS-TOP-15-015.- Geneva : CERN, 2016 Figure_001: 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; Fulltext in PDF: PDF;

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2016-08-24
23:41
Search for W' to tb in pp collisions at sqrt{s} = 13 TeV /CMS Collaboration
A search is performed for the production of a massive W' boson decaying to a top and a bottom quark. The data analyzed correspond to an integrated luminosity of 2.55~fb$^{-1}$ collected with the CMS detector at the LHC in proton-proton collisions at $\sqrt{s}=13$~TeV. [...]
CMS-PAS-B2G-16-009.- Geneva : CERN, 2016 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006: PDF; Fulltext in PDF: PDF;

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