A search for the K+ → μ−νe+e+ decay

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

Physics Letters B(2023)

Cited 0|Views48
No score
Abstract
A search for the K+→μ−νe+e+ decay, forbidden within the Standard Model by either lepton number or lepton flavour conservation depending on the flavour of the emitted neutrino, has been performed using the dataset collected by the NA62 experiment at CERN in 2016–2018. An upper limit of 8.1×10−11 is obtained for the decay branching fraction at 90% CL, improving by a factor of 250 over the previous search.
More
Translated text
Key words
Kaon decays,Lepton number violation,Lepton flavour violation
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined