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Measurement of the ratio B(t -> Wb)/B(t -> Wq) in pp collisions at root s=8 TeV

Abstract:

The ratio of the top-quark branching fractions R=B(t→Wb)/B(t→Wq), where the denominator includes the sum over all down-type quarks (q = b, s, d), is measured in the tt- dilepton final state with proton-proton collision data at s=8 TeV from an integrated luminosity of 19.7 fb-1, collected with the CMS detector. In order to quantify the purity of the signal sample, the cross section is measured by fitting the observed jet multiplicity, thereby constraining the signal and background contribution...

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Publication status:
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Authors


Khachatryan, V More by this author
Sirunyan, AM More by this author
Tumasyan, A More by this author
Bergauer, T More by this author
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Journal:
PHYSICS LETTERS B
Volume:
736
Pages:
33-57
Publication date:
2014-09-07
DOI:
ISSN:
0370-2693
URN:
uuid:8ffe972c-7359-463f-93e2-85d084cf2db4
Source identifiers:
478708
Local pid:
pubs:478708
Keywords:

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