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Title
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Measurement of the W boson helicity in events with a single reconstructed top quark in p p collisions = 8 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A measurement of the W boson helicity is presented, where the W boson originates from the decay of a top quark produced in pp collisions. The event selection, optimized for reconstructing a single top quark in the final state, requires exactly one isolated lepton (muon or electron) and exactly two jets, one of which is likely to originate from the hadronization of a bottom quark. The analysis is performed using data recorded at a center-of-mass energy of 8 TeV with the CMS detector at the CERN LHC in 2012. The data sample corresponds to an integrated luminosity of 19.7 fb(-1). The measured helicity fractions are F-L = 0.298 +/- 0.028 (stat) +/- 0.032(syst), F-0 = 0.720 +/- 0.039 (stat) +/- 0.037(syst), and F-R = -0.018 +/- 0.019 (stat) +/- 0.011(syst). These results are used to set limits on the real part of the tWb anomalous couplings, g(L) and g(R). |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2015
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ISSN
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1126-6708
1029-8479
[online]
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DOI
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10.1007/JHEP01(2015)053
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Volume/pages
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1
(2015)
, 35 p.
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Article Reference
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053
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ISI
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000347885000004
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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