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Determination of semi-muonic branching ratios and fragmentation functions of heavy quarks ine + e − annihilation at ⟨s√⟩ =34.6 GeV

Bartel, W. and Finch, Alexander (1987) Determination of semi-muonic branching ratios and fragmentation functions of heavy quarks ine + e − annihilation at ⟨s√⟩ =34.6 GeV. Zeitschrift für Physik C Particles and Fields, 33 (3). pp. 339-349. ISSN 0170-9739

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Abstract

Muon inclusive multihadronic final states ine + e − annihilation at ⟨s√⟩ =34.6 GeV, collected by the JADE detector at PETRA, have been analysed in terms of the semi-muonic branching ratios and fragmentation functions of heavy quarks. Defining the fragmentation variable, ζ, as z=(E+p∥)hadron(E+p)quark we find <z c >=(77±3±5)% and <z b >=(86±4±5)%. The corresponding semi-muonic branching ratios are measured to be BR(c→μv μ X)=7.8±1.5±2)% and BR (b→μv μ X)=(11.7±1.6±1.5)%. Defining ζ as xE=EhadronEbeam we observe an expected softening effect in the fragmentation due mainly to gluon emission, but find that this definition leads to semi-muonic branching ratiomeasurements which are strongly affected by uncertainties in the fragmentation process and the WCD calculation.

Item Type: Article
Journal or Publication Title: Zeitschrift für Physik C Particles and Fields
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63871
Deposited By: ep_importer_pure
Deposited On: 02 May 2013 14:39
Refereed?: Yes
Published?: Published
Last Modified: 30 Aug 2017 14:05
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/63871

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