Differential t(t)over-tilde cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb(-1) of ATLAS data

ATLAS Collaboration; J. R. Bensinger; C. Blocker; G. Sciolla

doi:10.1007/JHEP04(2023)080

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Differential t(t)over-tilde cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb(-1) of ATLAS data

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Differential t(t)over-tilde cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb(-1) of ATLAS data

ATLAS Collaboration, J. R. Bensinger, C. Blocker and G. Sciolla

Journal of high energy physics : JHEP, (4), 080

04/18/2023

DOI: https://doi.org/10.1007/JHEP04(2023)080

Abstract

Physics, Particles & Fields

Science & Technology

Physical Sciences

Physics

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 (p(T)) greater than 500 GeV. The observed data are unfolded to remove detector effects. The particle-level cross-section, multiplied by the t (t) over bar branching fraction and measured in a fiducial phase space defined by requiring the leading and second-leading jets to have p(T)> 500 GeV and p(T)> 350 GeV, respectively, is 331 +/- 3(stat.) +/- 39(syst.) fb. This is approximately 20% lower than the prediction of 398(-49)(+48) 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(-0.17)(+0.02) 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.

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Title: Differential t(t)over-tilde cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb(-1) of ATLAS data
Creators: ATLAS Collaboration (Author)
J. R. Bensinger - Brandeis University
C. Blocker - Brandeis University
G. Sciolla - Brandeis University
Publication Details: Journal of high energy physics : JHEP, (4), 080
Publisher: Springer Nature
Number of pages: 108
Grant note: MSSR, Slovakia ANAS, Azerbaijan; Azerbaijan National Academy of Sciences (ANAS) FWF, Austria; Austrian Science Fund (FWF) NAWA, Poland; Polish National Agency for Academic Exchange (NAWA) Investissements d'Avenir Idex, France; Agence Nationale de la Recherche (ANR) GSRI, Greece Benoziyo Center, Israel CAS, China; Chinese Academy of Sciences Wallenberg Foundation, Sweden NRC, Canada Compute Canada, Canada MOST, China; Ministry of Science and Technology, China RCN, Norway ERC, European Union; European Union (EU); European Research Council (ERC) RGC, China ANPCyT, Argentina; ANPCyT ANR, France; Agence Nationale de la Recherche (ANR) BMWFW, Austria SNSF, Switzerland; Swiss National Science Foundation (SNSF) MESTD, Serbia; Ministry of Education, Science & Technological Development, Serbia CNPq, Brazil; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) SRC, Sweden ARRS, Slovenia; Slovenian Research Agency - Slovenia Thales programme - EU-ESF, Greece; Thales Group MEYS CR, Czech Republic La Caixa Banking Foundation, Spain MEiN, Poland ERDF, European Union; European Union (EU); Marie Curie Actions NSERC, Canada; Natural Sciences and Engineering Research Council of Canada (NSERC) SCI/013 / UNCE, Czech Republic Herakleitos programme - EU-ESF, Greece MIZS, Slovenia Canton of Bern, Switzerland MPG, Germany; Max Planck Society BSF-NSF, Israel 21/SCI/017 / PRIMUS, Czech Republic NCN, Poland MEXT, Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) DSI/NRF, South Africa NSFC, China; National Natural Science Foundation of China (NSFC) Investissements d'Avenir Labex, France; Agence Nationale de la Recherche (ANR) CERN JSPS, Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science CEA-DRF/IRFU, France Hong Kong SAR, China INFN, Italy; Istituto Nazionale di Fisica Nucleare (INFN) COST, European Union BMBF, Germany; Federal Ministry of Education & Research (BMBF) IN2P3CNRS, France; Centre National de la Recherche Scientifique (CNRS) BCKDF, Canada DNRF, Denmark; National Research Foundation of Korea DFG, Germany; German Research Foundation (DFG) FCT, Portugal; Fundacao para a Ciencia e a Tecnologia (FCT) NSF, United States of America; National Science Foundation (NSF) Norwegian Financial Mechanism 2014-2021, Norway Goran Gustafssons Stiftelse, Sweden FAPESP, Brazil; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) MNE/IFA, Romania DNSRC, Denmark; Danish Natural Science Research Council Marie Sklodowska-Curie Actions, European Union; European Union (EU); Marie Curie Actions Greek NSRF, Greece Canton of Geneva, Switzerland STFC, United Kingdom; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) CFI, Canada; Canada Foundation for Innovation ISF, Israel; Israel Science Foundation CERCA Programme Generalitat de Catalunya, Spain AvH Foundation, Germany; Alexander von Humboldt Foundation NWO, Netherlands; Netherlands Organization for Scientific Research (NWO); Netherlands Government MICINN, Spain; Spanish Government SRNSFG, Georgia ARC, Australia; Australian Research Council CRC, Canada ANID, Chile HGF, Germany YerPhI, Armenia MOST, Taiwan; Ministry of Science and Technology, Taiwan CNRST, Morocco Minciencias, Colombia SERI, Switzerland TENMAK, Turkiye PROMETEO Programme Generalitat Valenciana, Spain CANARIE, Canada Royal Society, United Kingdom; Royal Society Leverhulme Trust, United Kingdom; Leverhulme Trust Aristeia programme - EU-ESF, Greece MINERVA, Israel Horizon 2020, European Union GenT Programme Generalitat Valenciana, Spain DOE, United States of America; United States Department of Energy (DOE)
Identifiers: 9924288385901921
Academic Unit: Martin A. Fisher School of Physics
Language: English
Resource Type: Journal article

Differential t(t)over-tilde cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb(-1) of ATLAS data

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