Authors
E Cortina Gil, Elisa Minucci, Sergey Padolski, Plamen Petrov, Bob Velghe, G Georgiev, V Kozhuharov, L Litov, T Numao, D Bryman, J Fu, T Husek, K Kampf, M Zamkovsky, R Aliberti, G Khoriauli, J Kunze, D Lomidze, R Marchevski, L Peruzzo, M Vormstein, R Wanke, P Dalpiaz, M Fiorini, E Gamberini, I Neri, A Norton, F Petrucci, H Wahl, A Cotta Ramusino, A Gianoli, E Iacopini, G Latino, M Lenti, A Bizzeti, F Bucci, R Volpe, A Antonelli, F Gonnella, G Lamanna, G Lanfranchi, G Mannocchi, S Martellotti, M Moulson, M Raggi, T Spadaro, F Ambrosino, T Capussela, Michele Corvino, D Di Filippo, P Massarotti, M Mirra, M Napolitano, G Saracino, G Anzivino, F Brizioli, E Imbergamo, R Lollini, C Santoni, M Barbanera, P Cenci, B Checcucci, V Duk, P Lubrano, M Lupi, M Pepe, Mauro Piccini, F Costantini, L Di Lella, N Doble, M Giorgi, S Giudici, E Pedreschi, M Sozzi, C Cerri, R Fantechi, R Piandani, J Pinzino, L Pontisso, F Spinella, I Mannelli, G D'Agostini, A Biagioni, E Leonardi, A Lonardo, P Valente, P Vicini, R Ammendola, V Bonaiuto, N De Simone, L Federici, A Fucci, A Salamon, F Sargeni, R Arcidiacono, B Bloch-Devaux, Marco Boretto, L Iacobuzio, E Menichetti, E Migliore, D Soldi, C Biino, A Filippi, F Marchetto, J Engelfried, N Estrada-Tristan, AM Bragadireanu, SA Ghinescu, OE Hutanu, T Enik, V Falaleev, V Kekelidze, Anna Korotkova, D Madigozhin, M Misheva, N Molokanova, S Movchan, I Polenkevich, Yu Potrebenikov, S Shkarovskiy, A Zinchenko, S Fedotov, E Gushchin, A Khotyantsev, A Kleimenova, Y Kudenko, V Kurochka, M Medvedeva, A Mefodev, A Shaikhiev, S Kholodenko, V Kurshetsov, V Obraztsov, A Ostankov, V Semenov, V Sugonyaev, O Yushchenko, L Bician, T Blazek, V Cerny, M Koval, Z Kucerova, A Ceccucci, H Danielsson, F Duval, B Döbrich, L Gatignon, R Guida, F Hahn, B Jenninger
Publication date
2018/3/10
Journal
Physics Letters B
Volume
778
Pages
137-145
Publisher
North-Holland
Description
A search for heavy neutral lepton production in K+ decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015 is reported. Upper limits at the 10− 7 to 10− 6 level are established on the elements of the extended neutrino mixing matrix| U e 4| 2 and| U μ 4| 2 for heavy neutral lepton mass in the ranges 170–448 MeV/c 2 and 250–373 MeV/c 2, respectively. This improves on the previous limits from HNL production searches over the whole mass range considered for| U e 4| 2, and above 300 MeV/c 2 for| U μ 4| 2.
Scholar articles
EC Gil, E Minucci, S Padolski, P Petrov, B Velghe… - Physics Letters B, 2018