Measurement of the W boson helicity in events with a single reconstructed top quark in p p collisions at root s=8 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10318408" target="_blank" >RIV/00216208:11320/15:10318408 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP01(2015)053" target="_blank" >http://dx.doi.org/10.1007/JHEP01(2015)053</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP01(2015)053" target="_blank" >10.1007/JHEP01(2015)053</a>

Result language
angličtina
Original language name
Measurement of the W boson helicity in events with a single reconstructed top quark in p p collisions at root s=8 TeV
Original language description
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).
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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