Abdullahi, A M, Barham Alzas, P, Batell, B, Beacham, J, Boyarsky, A, Carbajal, S, Chatterjee, A, Crespo-Anadon, J, Deppisch, F F, De Roeck, A, Drewes, M, Martin Gago, A, Gonzalez Suarez, R, Goudzovski, E, Hatzikoutelis, A, Hernandez-Garcia, J, Hostert, M, Hufnagel, M, Ilten, P, Izmaylov, A, Kelly, K J, Klaric, J, Kopp, J, Kulkarni, S, Lamoureux, M, Lanfranchi, G, Lopez-Pavon, J, Mikulenko, O, Mooney, M, Nemevsek, M, Ovchynnikov, M, Pascoli, S, Plestid, R, Darwish, M R, Leo Redi, F, Ruchayskiy, O, Ruiz, R, Shaposhnikov, M, Shchutska, L, Shoemaker, I M, Shrock, R, Sousa, A, Van Remortel, N, Syvolap, V, Takhistov, V, Tastet, J-L, Timiryasov, I, Vincent, A C & Yu, J 2023, ' The present and future status of heavy neutral leptons ', Journal of Physics G: Nuclear and Particle Physics, vol. 50, no. 2, 020501 . https://doi.org/10.1088/1361-6471/ac98f9 Journal of Physics G: Nuclear and Particle Physics, 2023, Vol.50(2) [Peer Reviewed Journal] Journal of physics : G : nuclear and particle physics