Publication
Title
Measurement of the $\Lambda_{b}^{0}$ decay form factor
Author
Institution/Organisation
DELPHI Collaboration
Abstract
 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.
Language
English
Source (journal)
Physics letters: B. - Amsterdam, 1967, currens
Publication
Amsterdam : 2004
ISSN
0370-2693
Volume/pages
585:1/2(2004), p. 63-84
ISI
000220317500010
Full text (Publisher's DOI)
UAntwerpen
 Faculty/Department Publication type Subject Affiliation Publications with a UAntwerp address