Aliberti, R. et al. (2021) Search for lepton number and flavor violation in K+ and π0 decays. Physical Review Letters, 127(13), 131802. (doi: 10.1103/PhysRevLett.127.131802)
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Abstract
Searches for the lepton number violating K^{+}→π^{-}μ^{+}e^{+} decay and the lepton flavor violating K^{+}→π^{+}μ^{-}e^{+} and π^{0}→μ^{-}e^{+} decays are reported using data collected by the NA62 experiment at CERN in 2017-2018. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level: B(K^{+}→π^{-}μ^{+}e^{+})<4.2×10^{-11}, B(K^{+}→π^{+}μ^{-}e^{+})<6.6×10^{-11} and B(π^{0}→μ^{-}e^{+})<3.2×10^{-10}. These results improve by 1 order of magnitude over previous results for these decay modes.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Angelucci, Dr Bruno and Protopopescu, Dr Dan and Britton, Professor David and Graham, Connor and Norton, Dr Alan |
Authors: | Aliberti, R., Ambrosino, F., Ammendola, R., Angelucci, B., Antonelli, A., Anzivino, G., Arcidiacono, R., Bache, T., Baeva, A., Baigarashev, D., Barbanera, M., Bernhard, J., Biagioni, A., Bician, L., Biino, C., Bizzeti, A., Blazek, T., Bloch-Devaux, B., Bonaiuto, V., Boretto, M., Bragadireanu, A.M., 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., D'Agostini, G., Dainton, J.B., Dalpiaz, P., Danielsson, H., De Simone, N., Di Filippo, D., Di Lella, L., Doble, N., Duk, V., Duval, F., Döbrich, B., Emelyanov, D., Engelfried, J., Enik, T., Estrada-Tristan, N., Falaleev, V., Fantechi, R., Fascianelli, V., Federici, L., Fedotov, S., Filippi, A., Fiorini, M., Fry, J.R., Fu, J., Fucci, A., Fulton, L., Gamberini, E., Gatignon, L., Georgiev, G., Ghinescu, S.A., Gianoli, A., Giorgi, M., Giudici, S., Gonnella, F., Goudzovski, E., Graham, C., Guida, R., Gushchin, E., Hahn, F., Heath, H., Henshaw, J., Holzer, E.B., Husek, T., Hutanu, O.E., Hutchcroft, D., Iacobuzio, L., Iacopini, E., Imbergamo, E., Jenninger, B., Jerhot, J., Jones, R.W.L., 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., Lamanna, G., Lanfranchi, G., Lari, E., Latino, G., Laycock, P., Lazzeroni, C., Lehmann Miotto, G., Lenti, M., Leonardi, E., Lichard, P., Litov, L., 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., 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., 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., Romano, A., Rubin, P., Ruggiero, G., Ryjov, V., Salamon, A., Santoni, C., Saracino, G., Sargeni, F., Schuchmann, S., Semenov, V., Sergi, A., Shaikhiev, A., Shkarovskiy, S., Soldi, D., Sozzi, M., Spadaro, T., Spinella, F., Sturgess, A., Sugonyaev, V., 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., and Zinchenko, A. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review Letters |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
ISSN (Online): | 1079-7114 |
Copyright Holders: | Copyright © 2021 American Physical Society |
First Published: | First published in Physical Review Letters 127(13): 131802 |
Publisher Policy: | Reproduced under a Creative Commons License |
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