2014-03-04
16:49 |
Combined multilepton and diphoton limit on t to cH
/CMS Collaboration
Based on the CMS inclusive multilepton analysis and a CMS 2HDM search involving lepton and photon final states, we present a $95\,\%$ CL limit on the branching ratio of the flavor-changing decay ${\rm t}\to{\rm c}\textrm{H}$.
The data sample corresponds to $19.5\,\textrm{fb}^{-1}$ of integrated luminosity in pp collisions at $\sqrt{s} = 8\,\textrm{TeV}$ collected by the CMS experiment at the LHC in 2012.
We find that $\mathcal{B}({\rm t}\to{\rm c}\textrm{H}) < 0.56\,\%$, corresponding to a bound on the left- and right-handed top-charm flavor violating Higgs Yukawa couplings of $\sqrt{|\lambda_{{\rm tc}}^\textrm{H}|^2 + |\lambda_{{\rm ct}}^\textrm{H}|^2} < 0.14$.
The observed bound is consistent with the expected bound of $0.65\,\%$..
CMS-PAS-HIG-13-034.-
Geneva : CERN, 2014
Fulltext in PDF: PDF;
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2014-02-27
12:09 |
Search for excited quarks in the photon + jet final state in proton proton collisions at 8 TeV
/CMS Collaboration
The paper presents a search for excited quarks $(q^{\star})$ decaying into a $\gamma+\mathrm{jet}$ final state at $\sqrt{s}=8\,\mathrm{TeV}$ with the CMS experiment, using the dataset corresponding to an integrated luminosity of $19.7\,\mathrm{fb^{-1}}$ collected during 2012 data taking
at the LHC. Photons and $\mathrm{jets}$ with high transverse momentum are selected to search for a resonance peak in the $\gamma+\mathrm{jet}$
invariant mass distribution. [...]
CMS-PAS-EXO-13-003.-
Geneva : CERN, 2014
Figure_001: PDF; Figure_002: PNG; Figure_003: PDF; Figure_004: PDF; Fulltext in PDF: PDF;
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2014-02-27
09:18 |
Measurement of the Differential Cross Section of W-Bosons Produced
in Association with Jets in $pp$ collisions at $\sqrt{s} = 7$ TeV
/CMS Collaboration
We present measurements of the cross-section for the production of W+jets, where the W decays to produce a muon, as a function of several variables,
including the transverse momenta and pseudorapidity of the four
leading jets, the scalar sum of jet transverse momenta, and the
difference in azimuthal angle between each jet and the muon. The data sample
corresponds to 5.0 inverse femtobarns of pp collisions at a center-of-mass
energy of 7 TeV, collected with the CMS detector at the LHC. [...]
CMS-PAS-SMP-12-023.-
Geneva : CERN, 2014
Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: 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; 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_010-a: PDF; Figure_010-b: PDF; Figure_010-c: PDF; Figure_010-d: 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_013-a: PDF; Figure_013-b: PDF; Figure_013-c: PDF; Figure_013-d: PDF; Fulltext in PDF: PDF;
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2014-02-26
14:21 |
Search for top-squark pair production with Higgs and Z bosons in the final state in pp collisions at 8 TeV
/CMS Collaboration
A search for direct top-squark pair production with Higgs or Z bosons in the decay final state is performed using a data sample of proton-proton collisions at $\sqrt{s}=8$~TeV, collected by the CMS detector at the LHC that corresponds to an integrated luminosity of 19.5~fb$^{-1}$. The search is performed in a sample of events containing leptons and b jets. [...]
CMS-PAS-SUS-13-024.-
Geneva : CERN, 2014
Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: 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-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_006: PDF; Fulltext in PDF: PDF;
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2014-02-18
18:10 |
Search for electroweak production of higgsinos in channels
with two Higgs bosons decaying to b quarks in pp collisions at 8 TeV
/CMS Collaboration
A search is presented for the electroweak pair production of higgsinos,
both of which decay to a Higgs boson and an almost massless, lightest supersymmetric particle (LSP).
Each Higgs boson is reconstructed in its decay to a bottom quark-antiquark pair.
The LSPs are presumed to be undetected,
leading to missing transverse energy.
The data sample corresponds to an integrated luminosity of 19.3~fb$^{-1}$ of proton-proton collisions collected in 2012 by the CMS experiment at
the LHC at a center-of-mass energy of 8~TeV.
For higgsino masses between about 270 and 350~GeV,
the expected 95\% confidence-level upper limits on the cross section
reach the level of the predicted production cross section.
Because of a slight excess in the observed number of events
compared to the estimated background,
no exclusion is obtained for any higgsino mass value..
CMS-PAS-SUS-13-022.-
Geneva : CERN, 2014
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_004-a: PDF; Figure_004-b: PDF; Figure_005: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: 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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2014-02-18
18:05 |
Reinterpreting the results of the search for long-lived charged particles in the pMSSM and other BSM scenarios
/CMS Collaboration
The CMS search for long-lived charged particles in pp collisions at $\sqrt{s}$ = 7 and 8 TeV sets the most stringent limits existing to date on long-lived leptons. It is challenging to reinterpret these results under different model assumptions due to the complex dependence of the signal acceptance on the kinematic properties of the long-lived particles predicted by these models. [...]
CMS-PAS-EXO-13-006.-
Geneva : CERN, 2014
Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PNG; Figure_005-b: PNG; Figure_005-c: PNG; Figure_005-d: PNG; Figure_006-a: PNG; Figure_006-b: PNG; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008-a: PNG; Figure_008-b: PNG; Figure_009-a: PNG; Figure_009-b: PNG; Figure_010-a: PDF; Figure_010-b: 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; Fulltext in PDF: PDF;
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2014-02-11
10:10 |
Boosted Top Jet Tagging at CMS
/CMS Collaboration
Multiple techniques for reconstructing highly Lorentz-boosted, hadronically-decaying top quarks are studied. These techniques, including the CMS Top Tagger, the HEP Top Tagger, and N-subjettiness, use jet substructure and jet mass observables to identify ``top-jets''. [...]
CMS-PAS-JME-13-007.-
Geneva : CERN, 2014
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_002-d: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_008: 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_011-a: PDF; Figure_011-b: PDF; Figure_011-c: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Figure_012-c: PDF; Figure_013-a: PDF; Figure_013-b: PDF; Figure_013-c: PDF; Fulltext in PDF: PDF;
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2014-02-05
16:25 |
Hadronic event shapes in $pp$ collisions at 7 TeV
/CMS Collaboration
Event shape variables exhibit sensitivity to the structure of QCD radiation in hadron collisions. Five infrared- and collinear-safe event shape variables, each sensitive to the different features of multi-jet production, are measured using hadronic jet data collected with the CMS detector from pp collisions at $\sqrt{s}$ = 7 TeV, corresponding to a total integrated luminosity of 5 fb$^{-1}$. [...]
CMS-PAS-SMP-12-022.-
Geneva : CERN, 2014
Figure_001: PDF; Figure_002: PDF; Figure_003: PDF; Figure_004: PDF; Figure_005: PDF; Figure_006: PDF; Fulltext in PDF: PDF;
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2014-02-04
09:24 |
Search for supersymmetry in hadronic final states using MT2 with the CMS detector at sqrt(s) = 8 TeV
/CMS Collaboration
A search for supersymmetry or similar new physics is carried out using a
sample with 19.5 fb$^{-1}$ integrated luminosity of $\sqrt{s} = 8$ TeV pp
collisions collected by the CMS experiment at the LHC.
Our main approach, the inclusive $M_\mathrm{T2}$ analysis, is based on fully hadronic
final states. Events are selected using the stransverse mass variable, $M_\mathrm{T2}$, and analyzed separately for different jet and b-tagged jet multiplicities. [...]
CMS-PAS-SUS-13-019.-
Geneva : CERN, 2014
Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_003: 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-a: PDF; Figure_005-b: 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_007-g: PDF; Figure_007-h: PDF; Figure_007-i: 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_008-g: PDF; Figure_008-h: PDF; Figure_008-i: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_009-c: PDF; Figure_009-d: PDF; Figure_009-e: PDF; Figure_009-f: PDF; Figure_009-g: PDF; Figure_009-h: PDF; Figure_009-i: PDF; Figure_010: PDF; Figure_011-a: PDF; Figure_011-b: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Figure_012-c: PDF; Figure_013-a: PDF; Figure_013-b: PDF; Figure_013-c: PDF; Figure_014: PDF; Fulltext in PDF: PDF;
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2014-01-23
12:24 |
Search for top squarks decaying to a charm quark and a neutralino in events with a jet and missing transverse momentum
/CMS Collaboration
A search for the pair production of light top squarks in 8 TeV pp collision events containing a jet and missing transverse momentum is presented.
The data sample is collected by the CMS detector at the LHC and corresponds to an integrated luminosity of 19.7 fb$^{-1}$.
The number of observed events is found to be consistent with the standard model contributions determined from the collision data,
and limits are set down to a minimum mass difference, m$_{\tilde{t}}$ - m$_{\tilde{\chi_{0}}}$ of 10 GeV/$c^{2}$..
CMS-PAS-SUS-13-009.-
Geneva : CERN, 2014
Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_002: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: 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_007-a: PDF; Figure_007-b: PDF; Fulltext in PDF: PDF;
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