ALEPH Collaboration, The and Barate, R. and Betteridge, Andrew and Bowdery, Christopher and Colrain, Paul and Finch, Alexander and Foster, Frank and Hughes, Gareth and Jones, Roger and Williams, Mark (1998) A Measurement of the semileptonic branching ratio BR(b-baryon ---> p lepton anti-neutrino X) and a study of inclusive pi+-, K+-, (p,anti-p) production in Z decays. The European Physical Journal C (EPJ C) - Particles and Fields, 5 (2). pp. 205-227. ISSN 1434-6052
Full text not available from this repository.Abstract
Inclusive π± , K± and ( p,p¯ ) production is investigated using data recorded by the aleph detector between 1992 and 1994. The momentum spectra and multiplicities are measured separately in Z→bb¯ , Z→cc¯ and Z→u\baru,dd¯,ss¯ decays. The number of protons found in b-hadron decays is used to estimate the fraction of b-baryons in b events to be (10.2±0.7±2.7)% assuming BR(b-baryon →pX)=(58±6)% . From an additional study of proton-lepton correlations in b events, the branching ratio BR(b-baryon→plν¯X)=(4.63±0.72±0.98)% is obtained. The ratio BR(b-baryon→plν¯X)/BR(b-baryon→pX) is found to be 0.080±0.012±0.014 .