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CERN Document Server Sök i 349 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.57 sekunder. 
1.
Measurement of the mass difference between top quark and antiquark in pp collisions at $\sqrt{s} = 8$ TeV / CMS Collaboration
The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark (Delta m[t] = m[t] - m[t-bar]) that are produced in pp collisions at a center-of-mass energy of 8 TeV, using events with a muon or an electron and at least four jets in the final state. [...]
arXiv:1610.09551; CMS-TOP-12-031; CERN-EP-2016-249.- Geneva : Elsevier, 2017-07-10 - 22 p. - Published in : Phys. Lett. B 770 (2017) 50-71 Article from SCOAP3: PDF; Fulltext: fermilab-pub-16-592-cms - PDF; arXiv:1610.09551 - PDF; External link: Figures, tables and other information
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2.
Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at $\sqrt{s}$ = 8 TeV / CMS Collaboration
A search is performed for long-lived massive neutral particles decaying to quark-antiquark pairs. The experimental signature is a distinctive topology of a pair of jets, originating at a secondary vertex. [...]
arXiv:1411.6530; CMS-EXO-12-038; CERN-PH-EP-2014-256; CMS-EXO-12-038; CERN-PH-EP-2014-256.- Geneva : CERN, 2015-01-20 - 21 p. - Published in : Phys. Rev. D 91 (2015) 012007 APS Open Access article: PDF; Fulltext: arXiv:1411.6530 - PDF; openaccess_PhysRevD.91.012007 - PDF; External link: Open Access fulltext
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3.
Measurement of the cross section ratio $\sigma_\mathrm{t \bar{t} b \bar{b}} / \sigma_\mathrm{t \bar{t} jj }$ in pp collisions at $\sqrt{s}$ = 8 TeV / CMS Collaboration
The first measurement of the cross section ratio $\sigma_\mathrm{ t \bar{t} b \bar{b}} / \sigma_\mathrm{ t \bar{t} jj }$ is presented using a data sample corresponding to an integrated luminosity of 19.6 fb$^{-1}$ collected in pp collisions at $\sqrt{s}$ = 8 TeV with the CMS detector at the LHC. Events with two leptons ($\mathrm{e}$ or $\mu$) and four reconstructed jets, including two identified as b quark jets, in the final state are selected. [...]
arXiv:1411.5621; CMS-TOP-13-010; CERN-PH-EP-2014-249; CMS-TOP-13-010; CERN-PH-EP-2014-249.- Geneva : CERN, 2015-04-30 - 22 p. - Published in : Phys. Lett. B 746 (2015) 132 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: PDF;
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4.
Study of Z production in PbPb and pp collisions at $\sqrt{s_{NN}}$ = 2.76 TeV in the dimuon and dielectron decay channels / CMS Collaboration
The production of Z bosons is studied in the dimuon and dielectron decay channels in PbPb and pp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV, using data collected by the CMS experiment at the LHC. The PbPb data sample corresponds to an integrated luminosity of about $150~\mu\mathrm{b}^{-1}$, while the pp data sample collected in 2013 at the same nucleon-nucleon centre-of-mass energy has an integrated luminosity of $5.4~\mathrm{pb}^{-1}$. [...]
arXiv:1410.4825; CMS-HIN-13-004; CERN-PH-EP-2014-235; CMS-HIN-13-004; CERN-PH-EP-2014-235.- Geneva : CERN, 2015-03-04 - 37 p. - Published in : JHEP 03 (2015) 022 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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5.
Identification techniques for highly boosted W bosons that decay into hadrons / CMS Collaboration
In searches for new physics in the energy regime of the LHC, it is becoming increasingly important to distinguish single-jet objects that originate from the merging of the decay products of W bosons produced with high transverse momenta from jets initiated by single partons. Algorithms are defined to identify such W jets for different signals of interest, using techniques that are also applicable to other decays of bosons to hadrons that result in a single jet, such as those from highly boosted Z and Higgs bosons. [...]
arXiv:1410.4227; CMS-JME-13-006; CERN-PH-EP-2014-241; CMS-JME-13-006; CERN-PH-EP-2014-241.- Geneva : CERN, 2014-12-02 - 43 p. - Published in : JHEP 12 (2014) 017 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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6.
Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}=8~\mathrm{TeV}$ / CMS Collaboration
The purely electroweak (EW) cross section for the production of two jets in association with a Z boson, in proton-proton collisions at $\sqrt{s}=8~\mathrm{TeV}$, is measured using data recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of $19.7~\mathrm{fb}^{-1}$. The electroweak cross section for the $\ell \ell \mathrm{jj}$ final state (with $\ell$ = e or $\mu$ and $\mathrm{j}$ representing the quarks produced in the hard interaction) in the kinematic region defined by $M_{\ell\ell}$ > $50~\mathrm{GeV}$, $M_\mathrm{jj}$ > $120~\mathrm{GeV}$, transverse momentum $p_{\mathrm{Tj}}$ > $25~\mathrm{GeV}$, and pseudorapidity $|\eta_\mathrm{j}|$ < $5$, is found to be $\sigma_\mathrm{EW}(\ell\ell \mathrm{jj}) =174 \pm 15~\mathrm{(stat)} \pm 40~\mathrm{(syst)}~\mathrm{fb}$, in agreement with the standard model prediction.The associated jet activity of the selected events is studied, in particular in a signal-enriched region of phase space, and the measurements are found to be in agreement with QCD predictions..
arXiv:1410.3153; CMS-FSQ-12-035; CERN-PH-EP-2014-234; CMS-FSQ-12-035; CERN-PH-EP-2014-234.- Geneva : CERN, 2015-02-10 - 49 p. - Published in : Eur. Phys. J. C 75 (2015) 66 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Springer Open Access article: PDF; External link: Preprint
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7.
Searches for heavy Higgs bosons in two-Higgs-doublet models and for $t→ch$ decay using multilepton and diphoton final states in $pp$ collisions at 8 TeV / CMS Collaboration
Searches are presented for heavy scalar ($\mathrm{H}$) and pseudoscalar ($\mathrm{A}$) Higgs bosons posited in the two doublet model (2HDM) extensions of the standard model (SM). These searches are based on a data sample of $\mathrm{p}\mathrm{p}$ collisions collected with the CMS experiment at the LHC at a center-of-mass energy of $\sqrt{s} = 8~\mathrm{TeV}$ and corresponding to an integrated luminosity of $19.5~\mathrm{fb}^{-1}$. [...]
arXiv:1410.2751; CMS-HIG-13-025; CERN-PH-EP-2014-239; CMS-HIG-13-025; CERN-PH-EP-2014-239.- Geneva : CERN, 2014-12-23 - 35 p. - Published in : Phys. Rev. D 90 (2014) 112013 APS Open Access article: PDF; Fulltext: openaccess_PhysRevD.90.112013 - PDF; arXiv:1410.2751 - PDF; External link: Open Access fulltext
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8.
Measurement of prompt $\psi(2\mathrm{S})$ to $\mathrm{J}/\psi$ yield ratios in $\mathrm{Pb}\mathrm{Pb}$ and $\mathrm{p}\mathrm{p}$ collisions at $\sqrt{s_\mathrm{NN}} = 2.76~\mathrm{TeV}$ / CMS Collaboration
The ratio between the prompt $\psi(2\mathrm{S})$ and $\mathrm{J}/\psi$ yields, reconstructed via their decays into $\mu^+\mu^-$, is measured in $\mathrm{Pb}\mathrm{Pb}$ and $\mathrm{p}\mathrm{p}$ collisions at $\sqrt{s_\mathrm{NN}} = 2.76~\mathrm{TeV}$. The analysis is based on $\mathrm{Pb}\mathrm{Pb}$ and $\mathrm{p}\mathrm{p}$ data samples collected by CMS at the LHC, corresponding to integrated luminosities of $150~\mu\mathrm{b}^{-1}$ and $5.4~\mathrm{pb}^{-1}$, respectively. [...]
arXiv:1410.1804; CMS-HIN-12-007; CERN-PH-EP-2014-240; CMS-HIN-12-007; CERN-PH-EP-2014-240.- Geneva : CERN, 2014-12-31 - 15 p. - Published in : Phys. Rev. Lett. 113 (2014) 262301 APS Open Access article: PDF; Fulltext: PDF; Fulltext from Publisher: PDF;
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9.
Measurement of the production cross section ratio $\sigma(\chi_{b2}(1\mathrm{P}))/ \sigma(\chi_{b1}(1\mathrm{P}))$ in pp collisions at $\sqrt{s}$ = 8 TeV / CMS Collaboration
A measurement of the production cross section ratio $\sigma(\chi_{b2}(1\mathrm{P}))/ \sigma(\chi_{b1}(1\mathrm{P}))$ is presented. The $\chi_{b1}(1\mathrm{P})$ and $\chi_{b2}(1\mathrm{P})$ bottomonium states, promptly produced in pp collisions at $\sqrt{s}$= 8 TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays $\chi_{b1,2}(1\mathrm{P}) \rightarrow \Upsilon(1\mathrm{S}) + \gamma$. [...]
arXiv:1409.5761; CMS-BPH-13-005; CERN-PH-EP-2014-217; CMS-BPH-13-005; CERN-PH-EP-2014-217.- Geneva : CERN, 2015-04-09 - 20 p. - Published in : Phys. Lett. B 743 (2015) 383 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint
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10.
Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at $\sqrt{s}$ = 8 TeV / CMS Collaboration
Results are presented from a search for particle dark matter (DM), extra dimensions, and unparticles using events containing a jet and an imbalance in transverse momentum. The data were collected by the CMS detector in proton-proton collisions at the LHC and correspond to an integrated luminosity of 19.7 fb$^{-1}$ at a centre-of-mass energy of 8 TeV. [...]
arXiv:1408.3583; CMS-EXO-12-048; CERN-PH-EP-2014-164; CMS-EXO-12-048; CERN-PH-EP-2014-164.- Geneva : CERN, 2015-05-29 - 35 p. - Published in : Eur. Phys. J. C 75 (2015) 235 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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CERN Document Server : Sök i 349 journaler efter:   1 - 10nästaslut  gå till journal:
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