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Gil, E Cortina, Minucci, E, Padolski, S, Petrov, P, Velghe, B, Georgiev, G, Kozhuharov, V, Litov, L, Numao, T, Bryman, D et al (show 179 more authors) , Fu, J, Husek, T, Kampf, K, Zamkovsky, M, Aliberti, R, Khoriauli, G, Kunze, J, Lomidze, D, Marchevski, R, Peruzzo, L, Vormstein, M, Wanke, R, Dalpiaz, R, Fiorini, M, Gamberini, E, Neri, I, Norton, A, Petrucci, F, Wahl, H, Ramusino, A Cotta, Gianoli, A, Iacopini, E, Latino, G, Lenti, M, Bizzeti, A, Bucci, F, Volpe, R, Antonelli, A, Lamanna, G, Lanfranchi, G, Mannocchi, G, Martellotti, S, Moulson, M, Raggi, M, Spadaro, T, Ambrosino, F, Capussela, T, Corvino, M, Di Filippo, D, Massarotti, R, Mirra, M, Napolitano, M, Saracino, G, Anzivino, G, Brizioli, F, Imbergamo, E, Lollini, R, Santoni, C, Barbanera, M, Cenci, P, Checcucci, B, Duk, V, Lubrano, R, Lupi, M, Pepe, M, Piccini, M, Costantini, F, Di Lella, L, Doble, N, Giorgi, M, Giudici, S, Pedreschi, E, Sozzi, M, Cerri, C, Fantechi, R, Piandani, R, Pinzino, J, Pontisso, L, Spinella, F, Mannelli, I, D'Agostini, G, Biagioni, A, Leonardi, E, Lonardo, A, Valente, R, Vicini, P, Ammendola, R, Bonaiuto, V, Federici, L, Fucci, A, Salamon, A, Sargeni, F, Arcidiacono, R, Bloch-Devaux, B, Boretto, M, Menichetti, E, Migliore, E, Soldi, D, Biino, C, Filippi, A, Marchetto, F, Engelfried, J, Estrada-Tristan, N, Bragadireanu, AM, Ghinescu, SA, Hutanu, OE, Enik, T, Falaleev, V, Kekelidze, V, Korotkova, A, Madigozhin, D, Misheva, M, Molokanova, N, Movchan, S, Polenkevich, I, Potrebenikov, Yu, Shkarovskiy, S, Zinchenko, A, Fedotov, S, Gushchin, E, Khotyantsev, A, Kleimenova, A, Kudenko, Y, Kurochka, V, Medvedeva, M, Mefodev, A, Shaikhiev, A, Kholodenko, S, Kurshetsov, V, Obraztsov, V, Ostankov, A, Semenov, V, Sugonyaev, V, Yushchenko, O, Bician, L, Blazek, T, Cerny, V, Koval, M, Kucerova, Z, Ceccucci, A, Danielsson, H, De Simone, N, Duval, F, Doebrich, B, Gatignon, L, Guida, R, Hahn, F, Jenninger, B, Laycock, R, Miotto, G Lehmann, Lichard, R, Mapelli, A, Massri, K, Noy, M, Palladino, V, Perrin-Terrin, M, Ryjov, V, Venditti, S, Brunetti, MB, Fascianelli, V, Gonnella, F, Goudzovski, E, Iacobuzio, L, Lazzeroni, C, Lurkin, N, Newson, F, Parkinson, C, Romano, A, Sergi, A, Sturgess, A, Swallow, J, Heath, H, Page, R, Trilov, S, Angelucci, B, Britton, D, Graham, C, Protopopescu, D, Dainton, JB, Fry, JR, Fulton, L, Hutchcroft, D, Maurice, E, Ruggiero, G, Wrona, B, Conovaloff, A, Cooper, R, Coward, D and Rubin, R
(2019)
First search for <i>K</i><SUP>+</SUP> → π<SUP>+</SUP> ν(ν)over-bar using the decay-in-flight technique.
PHYSICS LETTERS B, 791.
pp. 156-166.
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Abstract
The NA62 experiment at the CERN SPS reports the first search for K+→π+νν¯ using the decay-in-flight technique, based on a sample of 1.21×1011 K+ decays collected in 2016. The single event sensitivity is 3.15×10−10, corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14×10−10 on the K+→π+νν¯ branching ratio at 95% CL.
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