CMS

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2018-06-11
12:15
OpenAccess [PUBDB-2018-02244] Book/Report/Dissertation / PhD Thesis
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Precision measurement of the inclusive b jet production in proton proton collisions with the CMS experiment at the LHC at $\sqrt s = 13\, \text{TeV}$
[DESY-THESIS-2018-016; CMS TS-2018/005]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS , 334 pages : illustrations, figures () [10.3204/PUBDB-2018-02244] = Dissertation, Universit├Ąt Hamburg, 2018  GO
A measurement of the double differential cross section for inclusive $b$ jet production in proton-proton collisions as well as fraction of $b$ jets in the inclusive jet production is presented as a function of the transverse momentum $p_T$ and the absolute rapidity $|y|$.The data samples were collected in the CMS experiment at LHC during 2016 and correspond to an integrated luminosity of $35.2\,\text{fb}^{-1}$ at a centre-of-mass energy of $13\,\text{TeV}$.The jets are selected with $p_T > 74\,\text{GeV}$ and $|y| < 2.4$; the $b$ jets must contain a $B$ hadron.The measurement has significant statistics up to $p_T \sim \mathcal{O}(\text{TeV})$.Advanced methods of unfolding are performed to extract the signal.It is found that fixed-order calculations with underlying event describe the measurement well..
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2018-06-06
10:24
OpenAccess [PUBDB-2018-02206] Preprint/Report
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Elliptic flow of charm and strange hadrons in high-multiplicity pPb collisions at $\sqrt{s_{\mathrm{NN}}} =$ 8.16 TeV
[CMS-HIN-17-003; CERN-EP-2018-076; arXiv:1804.09767]
 GO
The elliptic azimuthal anisotropy coefficient ($v_2$) is measured for charm (D$^0$) and strange (K$_\mathrm{S}^0$, $\Lambda$, $\Xi^-$, and $\Omega^-$) hadrons, using a data sample of pPb collisions collected by the CMS experiment, at a nucleon-nucleon center-of-mass energy $\sqrt{s_{_\mathrm{NN}}} =$ 8.16 TeV. A significant positive $v_2$ signal from long-range azimuthal correlations is observed for all particle species in high-multiplicity pPb collisions. [...]
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2018-06-06
10:21
OpenAccess [PUBDB-2018-02205] Preprint/Report
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Measurement of the top quark mass with lepton+jets final states using pp collisions at $\sqrt{s}=$ 13 TeV
[CMS-TOP-17-007; CERN-EP-2018-063; arXiv:1805.01428]
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The mass of the top quark is measured using a sample of $\mathrm{t\overline{t}}$ events containing one isolated muon or electron and at least four jets in the final state, collected by the CMS detector using proton-proton collisions at $\sqrt{s}=$ 13 TeV at the CERN LHC. The events are selected from data corresponding to an integrated luminosity of 35.9 fb$^{-1}$. [...]
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2018-06-06
10:19
OpenAccess [PUBDB-2018-02204] Preprint/Report
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Measurement of prompt $\psi$(2S) production cross sections in proton-lead and proton-proton collisions at $\sqrt{s_{_\mathrm{NN}}}=$ 5.02 TeVm
[CMS-HIN-16-015; CERN-EP-2018-056; arXiv:1805.02248]
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Measurements of prompt $\psi$(2S) meson production cross sections in proton-lead (pPb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{_\mathrm{NN}}}=$ 5.02 TeV are reported. The results are based on pPb and pp data collected by the CMS experiment at the LHC, corresponding to integrated luminosities of 34.6 nb$^{-1}$ and 28.0 pb$^{-1}$, respectively. [...]
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2018-06-06
10:17
OpenAccess [PUBDB-2018-02203] Preprint/Report
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Constraining gluon distributions in nuclei using dijets in proton-proton and proton-lead collisions at $\sqrt{s_{_\mathrm{NN}}} =$ 5.02 TeV
[CMS-HIN-16-003; CERN-EP-2018-091; CMS-HIN-16-003; CERN-EP-2018-091; arXiv:1805.04736]
 GO
The pseudorapidity distributions of dijets as a function of their average transverse momentum ($p_\mathrm{T}^\text{ave}$) are measured in proton-lead (pPb) and proton-proton (pp) collisions. The data samples were collected by the CMS experiment at the CERN LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. [...]
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2018-06-06
10:15
OpenAccess [PUBDB-2018-02202] Preprint/Report
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Search for vector-like T and B quark pairs in final states with leptons at $\sqrt{s} =$ 13 TeV
[CMS-B2G-17-011; CERN-EP-2018-069; arXiv:1805.04758]
 GO
A search is presented for pair production of heavy vector-like T and B quarks in proton-proton collisions at $\sqrt{s} =$ 13 TeV. The data sample corresponds to an integrated luminosity of 35.9 fb$^{-1}$, collected with the CMS detector at the CERN LHC in 2016. [...]
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2018-06-06
10:12
OpenAccess [PUBDB-2018-02201] Preprint/Report
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Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state of two muons and two $\tau$ leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
[CMS-HIG-17-029; CERN-EP-2018-078; arXiv:1805.04865]
 GO
A search for exotic Higgs boson decays to light pseudoscalars in the final state of two muons and two $\tau$ leptons is performed using proton-proton collision data recorded by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV in 2016, corresponding to an integrated luminosity of 35.9 fb$^{-1}$. Masses of the pseudoscalar boson between 15.0 and 62.5 GeV are probed, and no significant excess of data is observed above the prediction of the standard model. [...]
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2018-06-06
10:08
OpenAccess [PUBDB-2018-02200] Preprint/Report
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Measurement of the groomed jet mass in PbPb and pp collisions at $\sqrt{s_{_\mathrm{NN}}} =$ 5.02 TeV
[CMS-HIN-16-024; CERN-EP-2018-097; arXiv:1805.05145]
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A measurement of the groomed jet mass in PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV with the CMS detector at the LHC is presented. Jet grooming is a recursive procedure which sequentially removes soft constituents of a jet until a pair of hard subjets is found. [...]
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2018-06-06
10:05
OpenAccess [PUBDB-2018-02199] Preprint/Report
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Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at $\sqrt{s} =$ 13 TeV
[CMS-SUS-17-005; CERN-EP-2018-079; arXiv:1805.05784]
 GO
A search for the pair production of the lightest supersymmetric partner of the top quark ($\widetilde{\mathrm{t}}_1$) is presented. The search focuses on a compressed scenario where the mass difference between the top squark and the lightest supersymmetric particle, often considered to be the lightest neutralino ($\widetilde{\chi}^0_1$), is smaller than the mass of the W boson. [...]
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2018-06-06
10:03
OpenAccess [PUBDB-2018-02198] Preprint/Report
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Search for black holes and sphalerons in high-multiplicity final states in proton-proton collisions at $\sqrt{s} =$ 13 TeV
[CMS-EXO-17-023; CERN-EP-2018-093; arXiv:1805.06013]
 GO
A search in energetic, high-multiplicity final states for evidence of physics beyond the standard model, such as black holes, string balls, and electroweak sphalerons, is presented. The data sample corresponds to an integrated luminosity of 35.9 fb$^{-1}$ collected with the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV in 2016. [...]
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