Measurements of t ¯ t differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in p p collisions at √ s = 13     TeV using the ATLAS detector Aguilar Saavedra, Juan Antonio Aaboud, M. Atlas Collaboration Parton Distributions Measurements are made of differential cross-sections of highly boosted pair-produced top quarks as a function of top-quark and t (t) over bar system kinematic observables using proton-proton collisions at a center-of-mass energy of root 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 p(T) > 500 GeV and a second with p(T) > 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 chi(2) values. The cross-section for t (t) over bar production in the fiducial phase-space region is 292 +/- 7(stat) +/- 71(syst) tb, to be compared to the theoretical prediction of 384 +/- 36 fb. 2019-10-04T08:47:55Z 2019-10-04T08:47:55Z 2018-07-25 info:eu-repo/semantics/article ATLAS Collaboration, M. Aaboud et al., Measurements of tt ¯ 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. Phys. Rev. D. 98(1), 012003 (2018) http://hdl.handle.net/10481/57208 10.1103/PhysRevD.98.012003 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España American Physical Society