TY - JOUR AU - ATLAS Collaboration (Aad, G. et al AU - Aparisi Pozo, J. A. AU - Bailey, A. J. AU - Cabrera Urban, S. AU - Castillo, F. L. AU - Castillo Gimenez, V. AU - Costa, M. J. AU - Escobar, C. AU - Estrada Pastor, O. AU - Ferrer, A. AU - Fiorini, L. AU - Fullana Torregrosa, E. AU - Fuster, J. AU - Garcia, C. AU - Garcia Navarro, J. E. AU - Gonzalez de la Hoz, S. AU - Gonzalvo Rodriguez, G. R. AU - Guerrero Rojas, J. G. R. AU - Higon-Rodriguez, E. AU - Lacasta, C. AU - Lozano Bahilo, J. J. AU - Madaffari, D. AU - Mamuzic, J. AU - Marti-Garcia, S. AU - Martinez Agullo, P. AU - Mitsou, V. A. AU - Moreno Llacer, M. AU - Poveda, M. AU - Rodriguez Bosca, S. AU - Ruiz-Martinez, A. AU - Salt, J. AU - Santra, A. AU - Sayago Galvan, I. AU - Soldevila, U. AU - Sanchez, J. AU - Valero, A. AU - Valls Ferrer, J. A. AU - Vos, M. PY - 2020 DA - 2020// TI - Search for top squarks in events with a Higgs or Z boson using 139 fb(-1) of pp collision data at root s=13 TeV with the ATLAS detector T2 - Eur. Phys. J. C JO - European Physical Journal C SP - 1080 EP - 33pp VL - 80 IS - 11 PB - Springer AB - This paper presents a search for direct top squark pair production in events with missing transverse momentum plus either a pair of jets consistent with Standard Model Higgs boson decay into b-quarks or a same-flavour opposite-sign dilepton pair with an invariant mass consistent with a Z boson. The analysis is performed using the proton-proton collision data at root s = 13 TeV collected with the ATLAS detector during the LHC Run-2, corresponding to an integrated luminosity of 139 fb(-1). No excess is observed in the data above the Standard Model predictions. The results are interpreted in simplified models featuring direct production of pairs of either the lighter top squark ((t) over tilde (1)) or the heavier top squark ((t) over tilde (2)), excluding at 95% confidence level (t) over tilde (1) and (t) over tilde2 masses up to about 1220 and 875 GeV, respectively. SN - 1434-6044 UR - https://arxiv.org/abs/2006.05880 UR - https://doi.org/10.1140/epjc/s10052-020-08469-8 DO - 10.1140/epjc/s10052-020-08469-8 LA - English N1 - WOS:000595779800001 ID - ATLASCollaborationAad_etal2020 ER -