Browsing by Author "Titov, Arsenii"

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    Heavy neutral leptons and top quarks in effective field theory
    (Springer Nature, 2025) Beltrán, Rebeca; Cottin Buracchio, Giovanna Francesca; Günther, Julian; Hirsch, Martin; Titov, Arsenii; Wang, Zeren S.
    We study the phenomenology of heavy neutral leptons (HNLs) at the LHC in effective field theory, concentrating on d = 6 operators with top quarks. Depending on the operator choice and HNL mass, the HNLs will be produced either from proton-proton collisions in association with a single top, or via non-standard decays of top quarks. For long-lived HNLs we estimate the sensitivity reach of different detectors to various operators with top quarks and the HNLs for the high-luminosity phase of the LHC. For certain operators, ATLAS and some far detectors (MATHUSLA and ANUBIS) will be able to probe the associated new-physics scale as large as 12 TeV and 4.5 TeV, respectively, covering complementary HNL-mass ranges.