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CLASSIFICATION OF THE HADRONIC DECAYS OF THE Z0 INTO B-QUARK AND C-QUARK PAIRS USING A NEURAL NETWORK

Abstract:
A classifier based on a feed-forward neural network has been used for separating a sample of about 123 500 selected hadronic decays of the Z0, collected by DELPHI during 1991, into three classes according to the flavour of the original quark pair: uu+dd+ss (unresolved), cc and bb. The classification has been used to compute the partial widths of the Z0 into b and c quark pairs. This gave Γcc/Γh = 0.151 ± 0.008 (stat.) ± 0.041 (syst.), Γbb/Γh = 0.232±0.005 (stat.)±0.017 (syst.). © 1992.
Publication status:
Published

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Journal:
Physics Letters B More from this journal
Volume:
295
Issue:
3-4
Pages:
383-395
Publication date:
1992-12-03
DOI:
ISSN:
0370-2693
Pubs id:
pubs:13284
UUID:
uuid:8ae972a0-4de3-4e54-8d20-416fd5647ff1
Local pid:
pubs:13284
Source identifiers:
13284
Deposit date:
2012-12-19

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