Title
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A measurement of the branching fractions of the b-quark into charged and neutral b-hadrons
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Author
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Institution/Organisation
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DELPHI Collaboration
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Abstract
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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)) %. (C) 2003 Elsevier B.V. All rights reserved. |
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Language
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English
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Source (journal)
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Physics letters : B. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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North-Holland
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2003
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ISSN
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0370-2693
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DOI
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10.1016/J.PHYSLETB.2003.09.070
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Volume/pages
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576
:1-2
(2003)
, p. 29-42
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ISI
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000186824500005
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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