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Improved measurement of the probability for gluon splitting into bb̄ in Z0 decays

Abstract:

We have measured gluon splitting into bottom quarks, g → bb̄, in hadronic Z0 decays collected by SLD between 1996 and 1998. The analysis was performed by looking for secondary bottom production in 4-jet events of any primary flavor. 4-jet events were identified, and in each event a topological vertex-mass technique was applied to the two jets closest in angle in order to identify them as b or b̄ jets. The upgraded CCD-based vertex detector gives very high B-tagging efficiency, especially for ...

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Journal:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics More from this journal
Volume:
507
Issue:
1-4
Pages:
61-69
Publication date:
2001-05-17
DOI:
ISSN:
0370-2693
Language:
English
Pubs id:
pubs:159560
UUID:
uuid:0ae55113-281d-44a3-83d4-73c7170f251a
Local pid:
pubs:159560
Source identifiers:
159560
Deposit date:
2012-12-19

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