We explore scenarios where top quarks may be produced singly in association with missing energy, a very distinctive signature, which, in analogy with monojets, we dub monotops. We find that monotops can be produced in a variety of modes, typically characterized by baryon number-violating or flavorchanging neutral interactions. We build a simplified model that encompasses all the possible (tree-level) production mechanisms and study the LHC sensitiveness to a few representative scenarios by considering fully hadronic top decays. We find that constraints on such exotic models can already be set with 1 fb-1 of integrated luminosity collected at √s=7 TeV.
Andrea, J., Fuks, B., & Maltoni, F. (2011). Monotops at the LHC. Physical review. D, Particles and fields, 84(7), 074025 (5 pages). https://doi.org/10.1103/PhysRevD.84.074025 (Original work published 2011)