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Production of orbitally excited charm mesons in semileptonic B decays

Buskulic, D. and Finch, Alexander (1997) Production of orbitally excited charm mesons in semileptonic B decays. Zeitschrift für Physik C Particles and Fields, 73 (4). pp. 601-612. ISSN 0170-9739

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Abstract

A sample of 3.6 million hadronic Z decays recorded between 1991 and 1995 with the ALEPH detector at LEP is used to investigate semileptonic decays of B mesons into final states involving orbitally excited charm mesons. Topological vertex criteria are used to search for decays involving narrow D** states as well as wide D** resonances and non-resonant D(*)pi final states. The sum of the branching ratios for these processes is measured to beBr((B) over bar --> D pi l(-)(v) over bar) + Br((B) over bar --> D*pi l(-)(v) over bar)= (2.26 +/-t 0.29(stat) +/- 0.33(syst))%,which accounts for a significant fraction of the deficit between inclusive measurements and the sum of exclusive semileptonic B decay modes.

Item Type: Article
Journal or Publication Title: Zeitschrift für Physik C Particles and Fields
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 64035
Deposited By: ep_importer_pure
Deposited On: 14 May 2013 15:53
Refereed?: Yes
Published?: Published
Last Modified: 21 Sep 2017 00:30
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/64035

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