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Search: WFRF:(Kim Chan) > (2015-2019)

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  • Aaltonen, T., et al. (author)
  • Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron
  • 2018
  • In: Physical Review Letters. - : AMER PHYSICAL SOC. - 0031-9007 .- 1079-7114. ; 120:4
  • Journal article (peer-reviewed)abstract
    • The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of root s = 1.96 TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is A(FB)(t (t) over bar) = 0.128 +/- 0.025. The combined inclusive and differential asymmetries are consistent with recent standard model predictions.
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  • Aaltonen, T., et al. (author)
  • Tevatron Combination of Single-Top-Quark Cross Sections and Determination of the Magnitude of the Cabibbo-Kobayashi-Maskawa Matrix Element V-tb
  • 2015
  • In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 115:15
  • Journal article (peer-reviewed)abstract
    • We present the final combination of CDF and D0 measurements of cross sections for single-top-quark production in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated luminosities of up to 9.7 fb(-1) per experiment. The t-channel cross section is measured to be sigma(t) = 2.25(-0.31)(+0.29) pb. We also present the combinations of the two-dimensional measurements of the s- vs t-channel cross section. In addition, we give the combination of the s + t channel cross section measurement resulting in sigma(s+t) = 3.30(-0.40)(+0.52) pb, without assuming the standard model value for the ratio sigma(s)/sigma(t). The resulting value of the magnitude of the top-to-bottom quark coupling is vertical bar V-tb vertical bar = 1.02(-0.05)(+0.06), corresponding to vertical bar V-tb vertical bar > 0.92 at the 95% C. L.
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7.
  • Aaltonen, T., et al. (author)
  • Tevatron Constraints on Models of the Higgs Boson with Exotic Spin and Parity Using Decays to Bottom-Antibottom Quark Pairs
  • 2015
  • In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 114:15
  • Journal article (peer-reviewed)abstract
    • Combined constraints from the CDF and D0 Collaborations on models of the Higgs boson with exotic spin J and parity P are presented and compared with results obtained assuming the standard model value J(P) = 0(+). Both collaborations analyzed approximately 10 fb(-1) of proton-antiproton collisions with a center-of-mass energy of 1.96 TeV collected at the Fermilab Tevatron. Two models predicting exotic Higgs bosons with J(P) = 0(-) and J(P) = 2(+) are tested. The kinematic properties of exotic Higgs boson production in association with a vector boson differ from those predicted for the standard model Higgs boson. Upper limits at the 95% credibility level on the production rates of the exotic Higgs bosons, expressed as fractions of the standard model Higgs boson production rate, are set at 0.36 for both the J(P) = 0(-) hypothesis and the J(P) = 2(+) hypothesis. If the production rate times the branching ratio to a bottom-antibottom pair is the same as that predicted for the standard model Higgs boson, then the exotic bosons are excluded with significances of 5.0 standard deviations and 4.9 standard deviations for the J(P) = 0(-) and J(P) = 2(+) hypotheses, respectively.
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8.
  • Aaltonen, T., et al. (author)
  • Tevatron Run II combination of the effective leptonic electroweak mixing angle
  • 2018
  • In: Physical Review D. - : AMER PHYSICAL SOC. - 2470-0010 .- 2470-0029. ; 97:11
  • Journal article (peer-reviewed)abstract
    • Drell-Yan lepton pairs produced in the process p (p) over bar -> l(+)l(-) + X through an intermediate gamma*/Z boson have an asymmetry in their angular distribution related to the spontaneous symmetry breaking of the electroweak force and the associated mixing of its neutral gauge bosons. The CDF and D0 experiments have measured the effective-leptonic electroweak mixing parameter sin(2) theta(lept)(eff) using electron and muon pairs selected from the full Tevatron proton-antiproton data sets collected in 2001-2011, corresponding to 9-10 fb(-1) of integrated luminosity. The combination of these measurements yields the most precise result from hadron colliders, sin(2)theta(lept)(eff) = 0.23148 +/- 0.00033. This result is consistent with, and approaches in precision, the best measurements from electron-positron colliders. The standard model inference of the on-shell electroweak mixing parameter sin(2) theta(W), or equivalently the W-boson mass M-W, using the ZFITTER software package yields sin(2) theta(W) = 0.22324 +/- 0.00033 or equivalently, M-W = 80.367 +/- 0.017 GeV/c(2).
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9.
  • Sampson, Joshua N., et al. (author)
  • Analysis of Heritability and Shared Heritability Based on Genome-Wide Association Studies for 13 Cancer Types
  • 2015
  • In: Journal of the National Cancer Institute. - : Oxford University Press (OUP). - 0027-8874 .- 1460-2105. ; 107:12
  • Journal article (peer-reviewed)abstract
    • Background: Studies of related individuals have consistently demonstrated notable familial aggregation of cancer. We aim to estimate the heritability and genetic correlation attributable to the additive effects of common single-nucleotide polymorphisms (SNPs) for cancer at 13 anatomical sites. Methods: Between 2007 and 2014, the US National Cancer Institute has generated data from genome-wide association studies (GWAS) for 49 492 cancer case patients and 34 131 control patients. We apply novel mixed model methodology (GCTA) to this GWAS data to estimate the heritability of individual cancers, as well as the proportion of heritability attributable to cigarette smoking in smoking-related cancers, and the genetic correlation between pairs of cancers. Results: GWAS heritability was statistically significant at nearly all sites, with the estimates of array-based heritability, h(l)(2), on the liability threshold (LT) scale ranging from 0.05 to 0.38. Estimating the combined heritability of multiple smoking characteristics, we calculate that at least 24% (95% confidence interval [CI] = 14% to 37%) and 7% (95% CI = 4% to 11%) of the heritability for lung and bladder cancer, respectively, can be attributed to genetic determinants of smoking. Most pairs of cancers studied did not show evidence of strong genetic correlation. We found only four pairs of cancers with marginally statistically significant correlations, specifically kidney and testes (rho = 0.73, SE = 0.28), diffuse large B-cell lymphoma (DLBCL) and pediatric osteosarcoma (rho = 0.53, SE = 0.21), DLBCL and chronic lymphocytic leukemia (CLL) (rho = 0.51, SE = 0.18), and bladder and lung (rho = 0.35, SE = 0.14). Correlation analysis also indicates that the genetic architecture of lung cancer differs between a smoking population of European ancestry and a nonsmoking Asian population, allowing for the possibility that the genetic etiology for the same disease can vary by population and environmental exposures. Conclusion: Our results provide important insights into the genetic architecture of cancers and suggest new avenues for investigation.
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10.
  • Thomas, HS, et al. (author)
  • 2019
  • swepub:Mat__t
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  • Result 1-10 of 98
Type of publication
journal article (87)
conference paper (9)
research review (1)
Type of content
peer-reviewed (95)
other academic/artistic (2)
Author/Editor
Chen, C. (14)
Li, H. (13)
Li, L. (11)
Abbott, B. (10)
Annovi, A. (10)
Antos, J. (10)
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Bartos, P. (10)
Bocci, A. (10)
Boudreau, J. (10)
Boveia, A. (10)
Brandt, A. (10)
Brock, R. (10)
Burdin, S. (10)
Bussey, P. (10)
Buzatu, A. (10)
Campanelli, M. (10)
Catastini, P. (10)
Cavaliere, V. (10)
Cerri, A. (10)
Cerrito, L. (10)
Chen, S. (10)
Clark, A. (10)
D'Onofrio, M. (10)
Deliot, F. (10)
Denisov, S. P. (10)
Donati, S. (10)
Enari, Y. (10)
Errede, S. (10)
Evans, H. (10)
Fiedler, F. (10)
Filthaut, F. (10)
Fox, H. (10)
Franklin, M. (10)
Giagu, S. (10)
Giokaris, N. (10)
Gorelov, I. (10)
Goshaw, A. T. (10)
Guillemin, T. (10)
Gutierrez, P. (10)
Hara, K. (10)
Hohlfeld, M. (10)
Hou, S. (10)
Hubacek, Z. (10)
Huston, J. (10)
Kehoe, R. (10)
Khanov, A. (10)
Kim, S. H. (10)
Kimura, N. (10)
Kroll, J. (10)
Kupco, A. (10)
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University
Karolinska Institutet (50)
Lund University (38)
Uppsala University (33)
Umeå University (21)
University of Gothenburg (11)
Stockholm University (10)
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Royal Institute of Technology (9)
Linköping University (9)
Chalmers University of Technology (8)
Högskolan Dalarna (4)
Luleå University of Technology (3)
University of Skövde (2)
Halmstad University (1)
Örebro University (1)
Swedish University of Agricultural Sciences (1)
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Language
English (98)
Research subject (UKÄ/SCB)
Medical and Health Sciences (52)
Natural sciences (30)
Engineering and Technology (7)
Social Sciences (2)

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