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- W2944281134 abstract "A determination of the top-quark mass is presented using 20.2 $text{fb}^{-1}$ of 8 TeV proton-proton collision data produced by the Large Hadron Collider and collected by the ATLAS experiment. The normalised differential cross section of top-quark pair production in association with an energetic jet is measured in the lepton+jets final state and unfolded to parton and particle levels. The unfolded distribution at parton level can be described using next-to-leading-order QCD predictions in terms of either the top-quark pole mass or the running mass as defined in the (modified) minimal subtraction scheme. A comparison between the experimental distribution and the theoretical prediction allows the top-quark mass to be extracted in the two schemes. The value obtained for the pole-mass scheme is: [ m_t^{text{pole}} = 171.1 pm 0.4 (text{stat}) pm 0.9 (text{syst}) substack{+0.7 -0.3} (text{theo}) text{ GeV}. ] The extracted value in the running-mass scheme is: [ m_t(m_t) = 162.9 pm 0.5 (text{stat}) pm 1.0 (text{syst}) substack{+2.1 -1.2} (text{theo}) text{ GeV}. ] The results for the top-quark mass using the two schemes are consistent, when translated from one scheme to the other." @default.
- W2944281134 created "2019-05-16" @default.
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