Search for heavy neutral lepton production in kaon decays

Parkinson, Cj; Aliberti, R; Ambrosino, F; Ammendola, R; Angelucci, B; Antonelli, A; Anzivino, G; Arcidiacono, R; Barbanera, M; Biagioni, A; Bician, L; Biino, C; Bizzeti, A; Blazek, T; Bloch-Devaux, B; Bonaiuto, V; Boretto, M; Bragadireanu, M; Britton, D; Brizioli, F; Brunetti, Mb; Bryman, D; Bucci, F; Capussela, T; Ceccucci, A; Cenci, P; Cerny, V; Cerri, C; Checcucci, B; Conovaloff, A; Cooper, P; Cortina Gil, E; Corvino, M; Costantini, F; Cotta Ramusino, A; Coward, D; D'Agostini, G; Dainton, J; Dalpiaz, P; Danielsson, H; de Simone, N; Di Filippo, D; Di Lella, L; Doble, N; Dobrich, B; Duval, F; Duk, V; Engelfried, J; Enik, T; Estrada-Tristan, N; Falaleev, V; Fantechi, R; Fascianelli, V; Federici, L; Fedotov, S; Filippi, A; Fiorini, M; Fry, J; Fu, J; Fucci, A; Fulton, L; Gamberini, E; Gatignon, L; Georgiev, G; Ghinescu, S; Gianoli, A; Giorgi, M; Giudici, S; Gonnella, F; Goudzovski, E; Graham, C; Guida, R; Gushchin, E; Hahn, F; Heath, H; Husek, T; Hutanu, O; Hutchcroft, D; Iacobuzio, L; Iacopini, E; Imbergamo, E; Jenninger, B; Kampf, K; Kekelidze, V; Kholodenko, S; Khoriauli, G; Khotyantsev, A; Kleimenova, A; Korotkova, A; Koval, M; Kozhuharov, V; Kucerova, Z; Kudenko, Y; Kunze, J; Kurochka, V; Kurshetsov, V; Lanfranchi, G; Lamanna, G; Latino, G; Laycock, P; Lazzeroni, C; Lenti, M; Lehmann Miotto, G; Leonardi, E; Lichard, P; Litov, L; Lollini, R; Lomidze, D; Lonardo, A; Lubrano, P; Lupi, M; Lurkin, N; Madigozhin, D; Mannelli, I; Mannocchi, G; Mapelli, A; Marchetto, F; Marchevski, R; Martellotti, S; Massarotti, P; Massri, K; Maurice, E; Medvedeva, M; Mefodev, A; Menichetti, E; Migliore, E; Minucci, E; Mirra, M; Misheva, M; Molokanova, N; Moulson, M; Movchan, S; Napolitano, M; Neri, I; Newson, F; Norton, A; Noy, M; Numao, T; Obraztsov, V; Ostankov, A; Padolski, S; Page, R; Palladino, V; Parkinson, C; Pedreschi, E; Pepe, M; Perrin-Terrin, M; Peruzzo, L; Petrov, P; Petrucci, F; Piandani, R; Piccini, M; Pinzino, J; Polenkevich, I; Pontisso, L; Potrebenikov, Y; Protopopescu, D; Raggi, M; Romano, A; Rubin, P; Ruggiero, G; Ryjov, V; Salamon, A; Santoni, C; Saracino, G; Sargeni, F; Semenov, V; Sergi, A; Shaikhiev, A; Shkarovskiy, S; Soldi, D; Sougonyaev, V; Sozzi, M; Spadaro, T; Spinella, F; Sturgess, A; Swallow, J; Trilov, S; Valente, P; Velghe, B; Venditti, S; Vicini, P; Volpe, R; Vormstein, M; Wahl, H; Wanke, R; Wrona, B; Yushchenko, O; Zamkovsky, M; Zinchenko, A

doi:10.1016/j.nuclphysbps.2022.11.001

A search for heavy neutral lepton (HNL) production in charged kaon decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015 is reported. Upper limits are established on the elements of the extended neutrino mixing matrix for HNL mass in the range 170−448 MeV/c2. This improves on the results from previous HNL production searches, setting more stringent limits and extending the mass range.

Parkinson, C.j., Aliberti, R., Ambrosino, F., Ammendola, R., Angelucci, B., Antonelli, A., et al. (2018). Search for heavy neutral lepton production in kaon decays. In Proceedings of the 53rd Rencontres de Moriond - 2018 Electroweak Interactions and Unified Theories, EW 2018 (pp.297-302). ARISF [10.1016/j.nuclphysbps.2022.11.001].