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Title
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Measurement of the decay form factor
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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 form factor of Λb0 baryons is estimated using 3.46×106 hadronic Z decays collected by the DELPHI experiment between 1992 and 1995. Charmed Λc+ baryons fully reconstructed in the pK−π+, pK0S, and Λπ+π+π− modes, are associated to a lepton with opposite charge in order to select Image decays. From a combined likelihood and event rate fit to the distribution of the IsgurWise variable w, and using the Heavy Quark Effective Theory (HQET), the slope of the b-baryon form factor is measured to be Image The exclusive semileptonic branching fraction Image can be derived from Image and is found to be (5.0+1.1−0.8(stat)+1.6−1.2(syst))%. Limits on other branching fractions are also obtained. |
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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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2004
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ISSN
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0370-2693
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DOI
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10.1016/J.PHYSLETB.2004.01.086
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Volume/pages
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585
:1/2
(2004)
, p. 63-84
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ISI
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000220317500010
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Full text (Publisher's DOI)
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