Measurements of t¯t differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in pp collisions at √s=13 TeV using the ATLAS detector

doi:10.1103/PhysRevD.98.012003

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Vaniachine, A. | 2018

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DOI Доступ к ресурсу на сайте издателя			10.1103/PhysRevD.98.012003

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Title: Measurements of t¯t differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in pp collisions at √s=13 TeV using the ATLAS detector
Creator: Aad, G.
|
Abbott, B.
|
Chelkov, G. A.
|
Khodinov, A.
|
Tsybychev, D.
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Vaniachine, A.
|
Aaboud, M.
Date: 2018
DOI: 10.1103/PhysRevD.98.012003
Description: Measurements are made of differential cross-sections of highly boosted pair-produced top quarks as a function of top-quark and t¯t system kinematic observables using proton-proton collisions at a center-of-mass energy of √s=13 TeV. The data set corresponds to an integrated luminosity of 36.1 fb−1, recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Events with two large-radius jets in the final state, one with transverse momentum pT>500 GeV and a second with pT>350 GeV, are used for the measurement. The top-quark candidates are separated from the multijet background using jet substructure information and association with a b-tagged jet. The measured spectra are corrected for detector effects to a particle-level fiducial phase space and a parton-level limited phase space, and are compared to several Monte Carlo simulations by means of calculated χ2 values. The cross-section for t¯t production in the fiducial phase-space region is 292±7(stat)±71(syst) fb, to be compared to the theoretical prediction of 384±36 fb.

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collection(s): Радиофизический факультет | Физический факультет | Научное управление
Identifier: смотреть в электронном каталоге НБ ТГУ
Type: статьи в журналах
Source: Physical Review D. 2018. Vol. 98, № 1. P. 012003-1-012003-39
Language: eng

Created: 11-06-2019

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Физический факультет Measurements of t¯t differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in pp collisions at √s=13 TeV using the ATLAS detector