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1.	Abdallah, J, et al. (author) A measurement of the branching fractions of the b-quark into charged and neutral b-hadrons 2003 In: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 576:1-2, s. 29-42 Journal article (peer-reviewed)abstract The production fractions of charged and neutral b-hadrons in b-quark events from Z(0) decays have been measured with the DELPHI detector at LEP. An algorithm has been developed, based on a neural network, to estimate the charge of the weakly-decaying b-hadron by distinguishing its decay products from particles produced at the primary vertex. From the data taken in the years 1994 and 1995, the fraction of (b) over bar -quarks fragmenting into positively charged weakly-decaying b-hadrons has been measured to be: f(+) = (42.09+/-0.82(stat)+/-0.89(syst))%. Subtracting the rates for charged Xi(b)(+) and Omega(b)(+) baryons gives the production fraction of B+ mesons: f(Bu) = (40.99+/-0.82(stat)+/-1.11 (syst)) %.

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Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Abdallah, J (1); Hedberg, Vincent (1); Jarlskog, Göran (1); Smirnova, Oxana (1); Anjos, N. (1); Baroncelli, A. (1); show more...; Battaglia, M. (1); Benekos, N. (1); Besson, N. (1); Boonekamp, M. (1); Brenner, R. (1); Bugge, L. (1); Canale, V. (1); Chudoba, J. (1); Di Ciaccio, L. (1); Di Simone, A. (1); Dris, M. (1); Eigen, G. (1); Elsing, M. (1); Fassouliotis, D. (1); Ferrer, A. (1); Fuster, J. (1); Garcia, C. (1); Graziani, E. (1); Hamacher, K. (1); Haug, S. (1); Hoffman, J. (1); Meroni, C. (1); Moa, T. (1); Morettini, P. (1); Nicolaidou, R. (1); Onofre, A. (1); Ouraou, A. (1); Parodi, F. (1); Parzefall, U. (1); Passeri, A. (1); Salt, J. (1); Sopczak, A. (1); Stugu, B. (1); Troncon, C. (1); van Vulpen, I. (1); Veloso, F. (1); Vrba, V. (1); Weiser, C. (1); Wicke, D. (1); Moenig, K. (1); Asman, B. (1); Joram, C. (1); Vegni, G. (1); Wahlen, H. (1); show less...

University: Lund University (1)

Language: English (1)

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

Year: 2003 (1)

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