Measurements of top-quark pair differential and double-differential cross-sections in the ℓ+jets channel with pp collisions at √ s = 13 TeV using the ATLAS detector
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Springer Nature
Date
2019-12-24Referencia bibliográfica
Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., ... & Abreu, H. (2019). Measurements of top-quark pair differential and double-differential cross-sections in the $$\ell $$ ℓ+ jets channel with pp collisions at $$\sqrt {s}= 13$$ s= 13 TeV using the ATLAS detector. The European Physical Journal C, 79(12), 1-84.
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We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS,MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, The Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, UK; DOE and NSF, USA. In addition, individual groups and members have received support fromBCKDF,CANARIE,CRCandComputeCanada, Canada; COST, ERC, ERDF, Horizon 2020, and Marie Skłodowska- Curie Actions, European Union; Investissements d’ Avenir Labex and Idex, ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; CERCA Programme Generalitat de Catalunya, Spain; The Royal Society and Leverhulme Trust, United Kingdom.Résumé
Single- and double-differential cross-section
measurements are presented for the production of top-quark
pairs, in the lepton + jets channel at particle and parton level.
Two topologies, resolved and boosted, are considered and
the results are presented as a function of several kinematic
variables characterising the top and t ¯t system and jet multiplicities.
The study was performed using data from pp collisions
at centre-of-mass energy of 13 TeV collected in 2015
and 2016 by the ATLAS detector at the CERN Large Hadron
Collider (LHC), corresponding to an integrated luminosity
of 36 fb−1. Due to the large t ¯t cross-section at the LHC,
such measurements allow a detailed study of the properties
of top-quark production and decay, enabling precision tests
of several Monte Carlo generators and fixed-order Standard
Model predictions. Overall, there is good agreement between
the theoretical predictions and the data.