@Article{ATLASCollaborationAad_etal2020, author="ATLAS Collaboration (Aad, G. et al and Aparisi Pozo, J. A. and Bailey, A. J. and Cabrera Urban, S. and Castillo, F. L. and Castillo Gimenez, V. and Costa, M. J. and Escobar, C. and Estrada Pastor, O. and Ferrer, A. and Fiorini, L. and Fullana Torregrosa, E. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Gonzalvo Rodriguez, J. G. R. and Guerrero Rojas, J. G. R. and Higon-Rodriguez, E. and Lacasta, C. and Lozano Bahilo, J. J. and Madaffari, D. and Mamuzic, J. and Marti-Garcia, S. and Martinez Agullo, P. and Mitsou, V. A. and Moreno Llacer, M. and Poveda, J. and Rodriguez Bosca, S. and Ruiz-Martinez, A. and Salt, J. and Santra, A. and Sayago Galvan, I. and Soldevila, U. and Sanchez, J. and Valero, A. and Valls Ferrer, J. A. and Vos, M.", title="Search for t(t)over-bar resonances in fully hadronic final states in pp collisions at root s=13 TeV with the ATLAS detector", journal="Journal of High Energy Physics", year="2020", publisher="Springer", volume="10", number="10", pages="061--43pp", optkeywords="Jet substructure; Beyond Standard Model; Hadron-Hadron scattering (experiments); Heavy quark production; Jets", abstract="This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb(-1) of proton-proton collision data recorded at a centre-of-mass energy of root s = 13TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a t (t) over bar pair with mass above 1.4TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new Z{\textquoteright} boson in a topcolor-assisted-technicolor model. The Z0 boson masses below 3.9 and 4.7TeV are excluded at 95{\%} confidence level for the decay widths of 1{\%} and 3{\%}, respectively.", optnote="WOS:000579438800001", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4574), last updated on Tue, 03 Nov 2020 08:45:35 +0000", issn="1029-8479", doi="10.1007/JHEP10(2020)061", opturl="https://arxiv.org/abs/2005.05138", opturl="https://doi.org/10.1007/JHEP10(2020)061", language="English" }