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- W4228998121 abstract "Measurements of single-, double-, and triple-differential cross-sections are presented for boosted top-quark pair-production in 13$~text{TeV}$ proton--proton collisions recorded by the ATLAS detector at the LHC. The top quarks are observed through their hadronic decay and reconstructed as large-radius jets with the leading jet having transverse momentum ($p_{text{T}}$) greater than 500$~$GeV. The observed data are unfolded to remove detector effects. The particle-level cross-section, multiplied by the $tbar{t} rightarrow W W b bar{b}$ branching fraction and measured in a fiducial phase space defined by requiring the leading and second-leading jets to have $p_{text{T}} > 500~$GeV and $p_{text{T}} > 350~$GeV, respectively, is $331 pm 3 text{(stat.)} pm 39 text{(syst.)}~$fb. This is approximately 20% lower than the prediction of $398^{+48}_{-49}~$fb by Powheg+Pythia$~$8 with next-to-leading-order (NLO) accuracy but consistent within the theoretical uncertainties. Results are also presented at the parton level, where the effects of top-quark decay, parton showering, and hadronization are removed such that they can be compared with fixed-order next-to-next-to-leading-order (NNLO) calculations. The parton-level cross-section, measured in a fiducial phase space similar to that at particle level, is $1.94 pm 0.02 text{(stat.)} pm 0.25 text{(syst.)}~$pb. This agrees with the NNLO prediction of $1.96^{+0.02}_{-0.17}~$pb. Reasonable agreement with the differential cross-sections is found for most NLO models, while the NNLO calculations are generally in better agreement with the data. The differential cross-sections are interpreted using a Standard Model effective field-theory formalism and limits are set on Wilson coefficients of several four-fermion operators." @default.
- W4228998121 created "2022-05-08" @default.
- W4228998121 creator A5086903549 @default.
- W4228998121 date "2022-05-05" @default.
- W4228998121 modified "2023-09-29" @default.
- W4228998121 title "Differential $tbar{t}$ cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb$^{-1}$ of ATLAS data" @default.
- W4228998121 doi "https://doi.org/10.48550/arxiv.2205.02817" @default.
- W4228998121 hasPublicationYear "2022" @default.
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