@Article{ATLASCollaborationAaboud_etal2018, author="ATLAS Collaboration (Aaboud, M. et al and Alvarez Piqueras, D. and Aparisi Pozo, J. A. and Bailey, A. J. and Barranco Navarro, L. and Cabrera Urban, S. and Castillo, F. L. and Castillo Gimenez, V. and Cerda Alberich, L. 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 Higon-Rodriguez, E. and Jimenez Pena, J. and Lacasta, C. and Lozano Bahilo, J. J. and Madaffari, D. and Mamuzic, J. and Marti-Garcia, S. and Melini, D. and Mi{\~A}{\textpm}ano, M. and Mitsou, V. A. and Rodriguez Bosca, S. and Rodriguez Rodriguez, D. and Ruiz-Martinez, A. and Salt, J. and Soldevila, U. and Sanchez, J. and Valero, A. and Valls Ferrer, J. A. and Vos, M.", title="Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at >=13 TeV with the ATLAS detector", journal="Journal of High Energy Physics", year="2018", publisher="Springer", volume="12", number="12", pages="039--56pp", optkeywords="Hadron-Hadron scattering (experiments)", abstract="A search for new phenomena in events with two same- charge leptons or three leptons and jets identi fi ed as originating from b -- quarks in a data sample of 36.1 fb of pp collisions at ps = 13TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No signi fi cant excess is found and limits are set on vector- like quark, fourtop- quark, and same- sign top- quark pair production. The observed ( expected) 95{\%} CL mass limits for a vector- like T -- and B -- quark singlet are mT > 0 : 98 ( 0 : 99) TeV and mB > 1 : 00 ( 1 : 01) TeV respectively. Limits on the production of the vector- like T5=3 -- quark are also derived considering both pair and single production; in the former case the lower limit on the mass of the T5=3 -- quark is ( expected to be) 1.19 ( 1.21) TeV. The Standard Model fourtop- quark production cross- section upper limit is ( expected to be) 69 ( 29) fb. Constraints are also set on exotic four- top- quark production models. Finally, limits are set on samesign top- quark pair production. The upper limit on uu ! tt production is ( expected to be) 89 ( 59) fb for a mediator mass of 1TeV, and a dark- matter interpretation is also derived, excluding a mediator of 3TeV with a dark- sector coupling of 1.0 and a coupling to ordinary matter above 0.31.", optnote="WOS:000453294300002", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3850), last updated on Sat, 05 Jan 2019 00:12:45 +0000", issn="1029-8479", doi="10.1007/JHEP12(2018)039", opturl="http://arxiv.org/abs/1807.11883", opturl="https://doi.org/10.1007/JHEP12(2018)039", archivePrefix="arXiv", eprint="1807.11883", language="English" }