Combination Of The W Boson Polarization Measurements İn Top Quark Decays Using Atlas And Cms Data At Root S=8 Tev

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dc.authorid249433en_US
dc.contributor.authorBilki, Burak
dc.contributor.author., ve diğer.
dc.date.accessioned2020-10-12T14:03:05Z
dc.date.available2020-10-12T14:03:05Z
dc.date.issued2020
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractThe combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS ollaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at a centre-of-mass energy of 8 TeV, and corresponding to an integrated luminosity of about 20 fb?1 for each experiment. The measurements used events containing one lepton and having different jet multiplicities in the final state. The results are quoted as fractions of W bosons with longitudinal (F0 ), left-handed (FL), or right-handed (FR) polarizations. The resulting combined measurements of the polarization fractions are F0 = 0.693 ± 0.014 and FL = 0.315 ± 0.011. The fraction FR is calculated from the unitarity constraint to be FR = ?0.008 ± 0.007. These results are in agreement with the standard model predictions at next-to-next-to-leading order in perturbative quantum chromodynamics and represent an improvement in precision of 25 (29)% for F0 (FL) with respect to the most precise single measurement. A limit on anomalous right-handed vector (VR), and left- and right-handed tensor (gL, gR) tWb couplings is set while fixing all others to their standard model values. The allowed regions are [?0.11, 0.16] for VR, [?0.08, 0.05] for gL, and [?0.04, 0.02] for gR, at 95% confidence level. Limits on the corresponding Wilson coefficients are also derived.en_US
dc.identifier.citationJournal Of Hıgh Energy Physıcs, 8,(51); 2020en_US
dc.identifier.doi10.1007/JHEP08(2020)051
dc.identifier.issn1029-8479
dc.identifier.scopus2-s2.0-85090035581en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1007/JHEP08(2020)051
dc.identifier.wosWOS:000562898300001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherCMS Collaborationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.subjectHadron-Hadron scattering (experiments)en_US
dc.subjectTop physicsen_US
dc.titleCombination Of The W Boson Polarization Measurements İn Top Quark Decays Using Atlas And Cms Data At Root S=8 Teven_US
dc.typeArticleen_US

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