Measurement of colour flow using jet-pull observables in in t(t)over-bar events with the ATLAS experiment at root s=13TeV
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AbstractPrevious studies have shown that weighted angular moments derived from jet constituents encode the colour connections between partons that seed the jets. This paper presents measurements of two such distributions, the jet-pull angle and jet-pull magnitude, both of which are derived from the jet-pull angular moment. The measurement is performed in delivered by the Large Hadron Collider. The observables are measured for two dijet systems, corresponding to the colour-connected daughters of the Wboson and the two b-jets from the top-quark decays, which are not expected to be colour connected. To allow the comparison of the measured distributions to colour model predictions, the measured distributions are unfolded to particle level, after correcting for experimental effects introduced by the detector. While good agreement can be found for some combinations of predictions and observables, none of the predictions describes the data well across all observables.
All Author(s) ListATLAS Collaboration
Journal nameEuropean Physical Journal C: Particles and Fields
Year2018
Month10
Day22
Volume Number78
Issue Number10
PublisherSpringer Verlag (Germany): SCOAP3 / SpringerOpen (part of Springer Nature)
Article number847
ISSN1434-6044
LanguagesEnglish-United Kingdom

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