@Article{ATLASCollaborationAad_etal2021, author="ATLAS Collaboration (Aad, G. et al and Aparisi Pozo, J. A. and Bailey, A. J. and Cabrera Urban, S. and Cardillo, F. 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, 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 Prades Iba{\~{n}}ez, A. and Rodriguez Bosca, S. and Ruiz-Martinez, A. and Sabatini, P. and Salt, J. and Santra, A. and Sayago Galvan, I. and Soldevila, U. and Sanchez, J. and Torro Pastor, E. and Valero, A. and Valls Ferrer, J. A. and Villaplana Perez, M. and Vos, M.", title="Optimisation of large-radius jet reconstruction for the ATLAS detector in 13 TeV proton-proton collisions", journal="European Physical Journal C", year="2021", publisher="Springer", volume="81", number="4", pages="334--47pp", abstract="Jet substructure has provided new opportunities for searches and measurements at the LHC, and has seen continuous development since the optimization of the large-radius jet definition used by ATLAS was performed during Run 1. A range of new inputs to jet reconstruction, pile-up mitigation techniques and jet grooming algorithms motivate an optimisation of large-radius jet reconstruction for ATLAS. In this paper, this optimisation procedure is presented, and the performance of a wide range of large-radius jet definitions is compared. The relative performance of these jet definitions is assessed using metrics such as their pileup stability, ability to identify hadronically decaying W bosons and top quarks with large transverse momenta. A new type of jet input object, called a {\textquoteright}unified flow object{\textquoteright} is introduced which combines calorimeter- and inner-detector-based signals in order to achieve optimal performance across a wide kinematic range. Large-radius jet definitions are identified which significantly improve on the current ATLAS baseline definition, and their modelling is studied using pp collisions recorded by the ATLAS detector at TeV during 2017.", optnote="WOS:000641660400005", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4807), last updated on Thu, 20 May 2021 14:48:00 +0000", issn="1434-6044", doi="10.1140/epjc/s10052-021-09054-3", opturl="https://arxiv.org/abs/2009.04986", opturl="https://doi.org/10.1140/epjc/s10052-021-09054-3", language="English" }