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1.	Abazov, V. M., et al. (author) Measurement of beta (t -> Wb)/beta(t -> Wq) at root s=1.96 TeV 2006 In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 639:6, s. 616-622 Journal article (peer-reviewed)abstract We present the measurement of R = B(t -> Wb)/B(t -> Wq) in pp collisions at root s = 1.96 TeV, using 230 pb(-1) of data collected by the DO experiment at the Fermilab Tevatron Collider. We fit simultaneously R and the number (N-tt) of selected top quark pairs (tt), to the number of identified b-quark jets in events with one electron or one muon, three or more jets, and high transverse energy imbalance. To improve sensitivity, kinematical properties of events with no identified b-quark jets are included in the fit. We measure R = 1.03(-0.17)(0.19) (stat + syst), in good agreement with the standard model. We set lower limits of R > 0.61 and vertical bar V-tb vertical bar > 0.78 at 95% confidence level.

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Author/Editor: Abbott, B. (1); Strandberg, Jonas (1); Andeen, T. (1); Begel, M. (1); Black, K. M. (1); Blumenschein, U. (1); show more...; Borissov, G. (1); Bos, K. (1); Brandt, A. (1); Brock, R. (1); Brooijmans, G. (1); Burdin, S. (1); Burke, S. (1); Busato, E. (1); Butler, J. M. (1); Calvet, S. (1); Caron, S. (1); Chakraborty, D. (1); Cheu, E. (1); Clement, C. (1); Coadou, Y. (1); Cooke, M. (1); Crepe-Renaudin, S. (1); De, K. (1); de Jong, P. (1); Deliot, F. (1); Denisov, S. P. (1); Duflot, L. (1); Elmsheuser, J. (1); Evans, H. (1); Feligioni, L. (1); Fiedler, F. (1); Filthaut, F. (1); Fleck, I. (1); Fox, H. (1); Garcia, C. (1); Gillberg, D. (1); Golling, T. (1); Greenwood, Z. D. (1); Guo, J. (1); Gutierrez, P. (1); Haas, A. (1); Haefner, P. (1); Han, L. (1); Hanagaki, K. (1); Hauser, R. (1); Hensel, C. (1); Hohlfeld, M. (1); Jakobs, K. (1); Kehoe, R. (1); show less...

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