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      <dc:title>Differential tt¯ cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb−1 of ATLAS data</dc:title>
      <dc:creator>Aad, G.</dc:creator>
      <dc:creator>Aguilar Saavedra, Juan Antonio</dc:creator>
      <dc:creator>Rodríguez Chala, Mikael</dc:creator>
      <dc:creator>Atlas Collaboration</dc:creator>
      <dc:subject>Hadron-Hadron Scattering</dc:subject>
      <dc:subject>Jet Substructure and Boosted Jets</dc:subject>
      <dc:subject>Top physics</dc:subject>
      <dc:description>We thank CERN for the very successful operation of the LHC, as well as the support staff&#xd;
from our institutions without whom ATLAS could not be operated efficiently.&#xd;
We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia;&#xd;
BMWFW and FWF, Austria; ANAS, Azerbaijan; CNPq and FAPESP, Brazil;&#xd;
NSERC, NRC and CFI, Canada; CERN; ANID, Chile; CAS, MOST and NSFC, China;&#xd;
Minciencias, Colombia; MEYS CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-&#xd;
CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany;&#xd;
GSRI, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel;&#xd;
INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN,&#xd;
Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; MSSR,&#xd;
Slovakia; ARRS and MIZŠ, Slovenia; DSI/NRF, South Africa; MICINN, Spain; SRC&#xd;
and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva,&#xd;
Switzerland; MOST, Taiwan; TENMAK, Türkiye; STFC, United Kingdom; DOE and&#xd;
NSF, United States of America. In addition, individual groups and members have received&#xd;
support from BCKDF, CANARIE, Compute Canada and CRC, Canada; PRIMUS&#xd;
21/SCI/017 and UNCE SCI/013, Czech Republic; COST, ERC, ERDF, Horizon 2020 and&#xd;
Marie Skłodowska-Curie Actions, European Union; Investissements d’Avenir Labex, Investissements&#xd;
d’Avenir Idex and ANR, France; DFG and AvH Foundation, Germany; Herakleitos,&#xd;
Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF,&#xd;
Greece; BSF-NSF and MINERVA, Israel; Norwegian Financial Mechanism 2014-2021, Norway;&#xd;
NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Programme Generalitat&#xd;
de Catalunya and PROMETEO and GenT Programmes Generalitat Valenciana,&#xd;
Spain; Göran Gustafssons Stiftelse, Sweden; The Royal Society and Leverhulme Trust,&#xd;
United Kingdom.&#xd;
The crucial computing support from all WLCG partners is acknowledged gratefully,&#xd;
in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF&#xd;
(Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF&#xd;
(Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA),&#xd;
the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors&#xd;
of computing resources are listed in ref. [133].</dc:description>
      <dc:description>Measurements of single-, double-, and triple-differential cross-sections are presented for boosted top-quark pair-production in 13 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 (pT) greater than 500 GeV. The observed data are unfolded to remove detector effects. The particle-level cross-section, multiplied by the tt¯→WWbb¯¯ branching fraction and measured in a fiducial phase space defined by requiring the leading and second-leading jets to have pT > 500 GeV and pT > 350 GeV, respectively, is 331 ± 3(stat.) ± 39(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 ± 0.02(stat.) ± 0.25(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.</dc:description>
      <dc:date>2023-06-23T09:50:25Z</dc:date>
      <dc:date>2023-06-23T09:50:25Z</dc:date>
      <dc:date>2023-04-18</dc:date>
      <dc:type>journal article</dc:type>
      <dc:identifier>The ATLAS Collaboration., Aad, G., Abbott, B. et al. Differential tt¯ cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb−1 of ATLAS data. J. High Energ. Phys. 2023, 80 (2023). [https://doi.org/10.1007/JHEP04(2023)080]</dc:identifier>
      <dc:identifier>https://hdl.handle.net/10481/82764</dc:identifier>
      <dc:identifier>10.1007/JHEP04(2023)080</dc:identifier>
      <dc:language>eng</dc:language>
      <dc:rights>http://creativecommons.org/licenses/by/4.0/</dc:rights>
      <dc:rights>open access</dc:rights>
      <dc:rights>Atribución 4.0 Internacional</dc:rights>
      <dc:publisher>Springer Nature</dc:publisher>
   </ow:Publication>
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