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Measurement of the semileptonic b branching fractions and average b mixing parameter in Z decays

Abstract:
The semileptonic branching fractions for primary and cascade b decays BR(b → l-), BR(b → c → l+) and BR(b → c̄ → l- were measured in hadronic Z decays collected by the DELPHI experiment at LEP. The sample was enriched in b decays using the lifetime information and various techniques were used to separate leptons from direct or cascade b decays. By fitting the momentum spectra of di-leptons in opposite jets, the average b mixing parameter x̄ was also extracted. The following results have been obtained: (equation presented).
Publication status:
Published

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Publisher copy:
10.1007/s110520100690

Authors


Ajinenko, I More by this author
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Journal:
EUROPEAN PHYSICAL JOURNAL C
Volume:
20
Issue:
3
Pages:
455-478
Publication date:
2001-05-05
DOI:
ISSN:
1434-6044
URN:
uuid:90ab38ca-c45a-401e-aef6-1f04281d6162
Source identifiers:
8786
Local pid:
pubs:8786
Language:
English

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