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1.	Abazov, V. M., et al. (author) Measurement of the production fraction times branching fraction f(b -> Lambda(b)) . B(Lambda(b) -> J/psi Lambda) 2011 In: Physical Review D. - 1550-7998 .- 1550-2368. ; 84:3, s. 031102- Journal article (peer-reviewed)abstract The Lambda(b)(udb) baryon is observed in the decay Lambda(b) -> J/psi Lambda using 6.1fb(-1) of p (p) over bar collisions collected with the D0 detector at root s = 1/96 TeV. The production fraction multiplied by the branching fraction for this decay relative to that for the decay B(0) -> J/psi K(s)(0) is measured to be 0.345 +/- 0.034(stat) +/- 0.033(syst) +/- 0.003(PDG). Using the world average value of f(b -> B(0)) . B(B(0) -> J/psi K(s)(0) = (1.74 +/- 0.08) x 10(-5), we obtain f(b -> Lambda(b)) . B(Lambda(b) -> J/psi Lambda) = (6.01 +/- 0.60(stat) +/- 0.58(syst) +/- 0.28(PDG)) x 10(-5). This measurement represents an improvement in precision by about a factor of 3 with respect to the current world average.

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Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Abbott, B. (1); Ancu, L. S. (1); Aoki, M. (1); Begel, M. (1); Bohm, Christian (1); Borissov, G. (1); show more...; Brandt, A. (1); Brandt, O. (1); Brock, R. (1); Brooijmans, G. (1); Brown, J. (1); Burdin, S. (1); Buszello, Claus P. (1); Chakraborty, D. (1); Cooke, M. (1); De, K. (1); Deliot, F. (1); Denisov, S. P. (1); Deterre, C. (1); Enari, Y. (1); Evans, H. (1); Facini, G. (1); Fiedler, F. (1); Filthaut, F. (1); Fox, H. (1); Gerbaudo, D. (1); Greenwood, Z. D. (1); Grohsjean, A. (1); Guillemin, T. (1); Gutierrez, P. (1); Haas, A. (1); Han, L. (1); Hensel, C. (1); Hohlfeld, M. (1); Hubacek, Z. (1); Kehoe, R. (1); Khanov, A. (1); Kupco, A. (1); Kvita, J. (1); Lammers, S. (1); Li, L. (1); Liu, Y. (1); Lokajicek, M. (1); Lubatti, H. J. (1); Madar, R. (1); Meyer, J. (1); Nayyar, R. (1); Neal, H. A. (1); Nunnemann, T. (1); Penning, B. (1); show less...

University: Uppsala University (1); Stockholm University (1)

Language: English (1)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2011 (1)

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