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\bibitem{Cottin_etal2021} Cottin, G., Helo, J. C., Hirsch, M., Titov, A., \& Wang, Z. S. (2021). Heavy neutral leptons in effective field theory and the high-luminosity LHC. \textit{J. High Energy Phys.}, \textit{09}(9), 039--34pp.

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