Search for K+ decays to a lepton and invisible particles

Akmete, A. et al. (2022) Search for K+ decays to a lepton and invisible particles. In: The 22nd International Workshop on Neutrinos from Accelerators (NuFact 2021), Cagliari, Italy, 6–11 Sep 2021, (doi: 10.22323/1.402.0157)

Abstract

Searches for heavy neutral leptons N in the K+→e+N and K+→μ+N decay channels using the dataset collected by the NA62 experiment at CERN between 2016-2018 are presented. Upper limits on the corresponding mixing matrix elements are reported at the level of O(10−9) and O(10−8) , respectively. This represents an improvement of at least an order of magnitude on previous measurement, as well as an extension to higher masses than previously covered. Related searches set upper limits on the rate of the K+→μ+ννν¯ and K+→μ+νX decay channels, with X an invisible scalar or vector boson.

• Item Type: Conference Proceedings
• Additional Information: Proceedings of Science, volume 402. Na62 Collaboration.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Norton, Dr Alan and Jones, Mr Russell and Angelucci, Dr Bruno and Britton, Professor David and Protopopescu, Dr Dan
• Authors: Akmete, A., Aliberti, R., Ambrosino, F., Ammendola, R., Angelucci, B., Antonelli, A., Anzivino, G., Arcidiacono, R., Bache, T., Baeva, A., Baigarashev, D., Bandiera, L., Barbanera, M., Bernhard, J., Biagioni, A., Bician, L., Biino, C., Bizzeti, A., Blazek, T., Bloch-Devaux, B., Boboc, V., Bonaiuto, M., Boretto, M., Bragadireanu, M., Briano Olvera, A., Britton, D., Brizioli, F., Brunetti, M.B., Bryman, D., Bucci, F., Capussela, T., Carmignani, J., 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., Cretaro, P., D'Agostini, G., Dainton, J., Dalpiaz, P., Danielsson, H., D'Arrico, M., De Simone, N., Di Filippo, D., Di Lella, L., Doble, N., Dobrich, B., Duval, F., Duk, V., Emelyanov, D., Engelfried, J., Enik, T., Estrada-Tristan, N., Falaleev, V., Fantechi, R., Fascianelli, V., Federici, L., Fedotov, S., Filippi, A., Fiorenza, R., Fiorini, M., Frezza, O., Fry, J., Fu, J., Fucci, A., Fulton, L., Gamberini, E., Gatignon, L., Georgiev, G., Ghinescu, S., Gianoli, A., Giorgi, M., Giudici, S., Gonnella, F., Gorshanov, K., Goudzovski, E., Graham, C., Guida, R., Gushchin, E., Hahn, F., Heath, H., Henshaw, J., Hives, Z., Holzer, E.B., Husek, T., Hutanu, O., Hutchcroft, D., Iacobuzio, L., Iacopini, E., Imbergamo, E., Jenninger, B., Jones, R.W., Kampf, K., Kekelidze, V., Kereibay, D., 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., Lari, E., Latino, G., Laycock, P., Lazzeroni, C., Lenti, M., Lehmann Miotto, G., Leonardi, E., Lichard, P., Litov, L., Lo Chiatto, P., Lollini, R., Lomidze, D., Lonardo, A., Lubrano, P., Lupi, M., Lurkin, N., Madigozhin, D., Mannelli, I., Mapelli, A., Marchetto, F., Marchevski, R., Martellotti, S., Massarotti, P., Massri, K., Maurice, E., Mazzolari, A., Medvedeva, M., 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., Okhotnikov, A., Ostankov, A., Padolski, S., Page, R., Palladino, V., Panichi, I., Parenti, A., Parkinson, C., Pedreschi, E., Pepe, M., Perrin-Terrin, M., Peruzzo, L., Petrov, P., Petrov, Y., Petrucci, F., Piandani, R., Piccini, M., Pinzino, J., Polenkevich, I., Pontisso, L., Potrebenikov, Y., Protopopescu, D., Raggi, m., Reyes Santos, M., Romagnoni, M., Romano, A., Rubin, P., Ruggiero, G., Ryjov, V., Sadovsky, A., Salamon, A., Santoni, C., Saracino, g., Sargeni, F., Schuchmann, S., Semenov, V., Sergi, A., Shaikhiev, A., Shkarovskiy, S., Soldani, M., Soldi, D., Sozzi, M., Spadaro, T., Spinella, F., Sturgess, A., Sugonyaev, V., Swallow, J., Sytov, A., Tinti, G., Tomczak, A., Trilov, S., Turisini, M., Valente, P., Velghe, B., Venditti, S., Vicini, P., Volpe, R., Vormstein, M., Wahl, H., Wanke, R., Wong, V., Wrona, B., Yushchenko, O., Zamkovsky, M., and Zinchenko, A.
• College/School: College of Science and Engineering > School of Physics and Astronomy
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