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Träfflista för sökning "hsv:(NATURVETENSKAP) hsv:(Fysik) hsv:(Subatomär fysik) ;pers:(Abolins M.)"

Sökning: hsv:(NATURVETENSKAP) hsv:(Fysik) hsv:(Subatomär fysik) > Abolins M.

  • Resultat 1-10 av 256
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1.
  • Aad, G., et al. (författare)
  • The ATLAS Experiment at the CERN Large Hadron Collider
  • 2008
  • Ingår i: Journal of Instrumentation. - 1748-0221. ; 3:S08003
  • Forskningsöversikt (refereegranskat)abstract
    • The ATLAS detector as installed in its experimental cavern at point 1 at CERN is described in this paper. A brief overview of the expected performance of the detector when the Large Hadron Collider begins operation is also presented.
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6.
  • Abazov, V. M., et al. (författare)
  • Measurement of the t-channel single top quark production cross section
  • 2010
  • Ingår i: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 682:4-5, s. 363-369
  • Tidskriftsartikel (refereegranskat)abstract
    • The DO Collaboration reports direct evidence for electroweak production of single top quarks through the t-channel exchange of a virtual W boson. This is the first analysis to isolate an individual single top quark production channel. We select events containing an isolated electron or muon, missing transverse energy, and two, three or four jets from 2.3 fb(-1) of p (p) over bar collisions at the Fermilab Tevatron Collider. One or two of the jets are identified as containing a b hadron. We combine three multivariate techniques optimized for the t-channel process to measure the t- and s-channel cross sections simultaneously. We measure cross sections of 3.14(-0.80)(+0.94) pb for the t-channel and 1.05 +/- 0.81 pb for the s-channel. The measured t-channel result is found to have a significance of 4.8 standard deviations and is consistent with the standard model prediction.
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7.
  • Abazov, V. M., et al. (författare)
  • Search for single top quarks in the tau plus jets channel using 4.8 fb(-1) of p(p)over-bar collision data
  • 2010
  • Ingår i: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 690:1, s. 5-14
  • Tidskriftsartikel (refereegranskat)abstract
    • We present the first direct search for single top quark production using reconstructed tau leptons in the final state. The search is based on 4.8 fb(-1) of integrated luminosity collected in p (p) over bar collisions at root s= 1.96 TeV with the D0 detector at the Fermilab Tevatron Collider. We select events with a final state including an isolated tau lepton. missing transverse energy, two or three jets, one or two of them being identified as b quark jet. We use a multivariate technique to discriminate signal from background. The number of events observed in data in this final state is consistent with the signal plus background expectation. We set in the tau + jets channel an upper limit on the single top quark cross section of 7.3 pb at the 95% C.L. This measurement allows a gain of 4% in expected sensitivity for the observation of single top production when combining it with electron + jets and muon + jets channels already published by the DO Collaboration with 2.3 fb(-1) of data. We measure a combined cross section of 3.84(-0.83)(+0.89) pb, which is the most precise measurement to date.
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8.
  • Abazov, V. M., et al. (författare)
  • Search for the Associated Production of a b Quark and a Neutral Supersymmetric Higgs Boson that Decays into tau Pairs
  • 2010
  • Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 104:15, s. 151801-
  • Tidskriftsartikel (refereegranskat)abstract
    • We report results from a search for production of a neutral Higgs boson in association with a b quark. We search for Higgs decays to tau pairs with one tau subsequently decaying to a muon and the other to hadrons. The data correspond to 2: 7 fb(-1) of p (p) over bar collisions recorded by the D0 detector at.. root s = 1.96 TeV. The data are found to be consistent with background predictions. The result allows us to exclude a significant region of parameter space of the minimal supersymmetric model.
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9.
  • Aad, G., et al. (författare)
  • 2012
  • Ingår i: Journal of High Energy Physics. - 1029-8479 .- 1126-6708. ; :11
  • Tidskriftsartikel (refereegranskat)
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10.
  • Aad, G., et al. (författare)
  • 2013
  • Tidskriftsartikel (refereegranskat)
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  • Resultat 1-10 av 256
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Abbott, B. (255)
Borissov, G. (247)
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Taylor, W. (242)
Yu, J. (242)
Filthaut, F. (241)
Han, L. (241)
Skubic, P. (241)
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Uppsala universitet (199)
Lunds universitet (140)
Kungliga Tekniska Högskolan (87)
Stockholms universitet (68)
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Engelska (256)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (256)

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