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Inclusive production of the omega and eta mesons in Z decays, and the muonic branching ratio of the omega

ALEPH Collaboration, The and Heister, A. and Bouhova-Thacker, Evelina and Bowdery, Christopher and Finch, Alexander and Foster, Frank and Hughes, Gareth and Jones, Roger (2002) Inclusive production of the omega and eta mesons in Z decays, and the muonic branching ratio of the omega. Physics Letters B, 528 (1-2). pp. 19-33. ISSN 0370-2693

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Abstract

The inclusive production of the η and ω(782) mesons is measured in the π+π−π0 decay mode in hadronic Z decays and compared to model predictions. The analysis is based on 4 million hadronic Z decays recorded by the ALEPH detector between 1991 and 1995. The η production rate for xp=pmeson/pbeam>0.10 is found to be 0.355±0.011stat±0.024sys per event, and the ω production rate for xp>0.05 is measured as 0.585±0.019stat±0.033sys per event. The branching ratio for ω→μ+μ− is investigated. A total of 18.1±5.9 events are observed, from which the muonic branching ratio is measured for the first time to be BR(ω→μ+μ−)=(9.0±2.9stat±1.1sys)×10−5.

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63921
Deposited By: ep_importer_pure
Deposited On: 03 May 2013 10:22
Refereed?: Yes
Published?: Published
Last Modified: 18 Nov 2017 12:16
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/63921

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