Search for K+ decays to a lepton and invisible particles
| Title: | Search for K+ decays to a lepton and invisible particles |
|---|---|
| Authors: | Volpe, R; 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, P; Bonaiuto, V; Boretto, M; Bragadireanu, M; Olvera, AB; Britton, D; Brizioli, F; Brunetti, MB; Bryman, D; Bucci, F; Capussela, T; Carmignani, J; Ceccucci, A; Cenci, P; Cerny, V; Cerri, C; Checcucci, B; Conovaloff, A; Cooper, P; Gil, EC; Corvino, M; Costantini, F; Ramusino, AC; Coward, D; Cretaro, P; D'Agostini, G; Dainton, J; Dalpiaz, P; Danielsson, H; D'Errico, 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, EB; Husek, T; Hutanu, O; Hutchcroft, D; Iacobuzio, L; Iacopini, E; Imbergamo, E; Jenninger, B |
| Publisher Information: | Sissa Medialab |
| Publication Year: | 2021 |
| Collection: | The University of Liverpool Repository |
| Description: | The NA62 experiment at CERN reports searches for K + → e + N, K + → µ + N and K + → µ + X decays, where N and X are massive invisible particles, using the 2016-2018 data set. The N particle is assumed to be a heavy neutral lepton, and the results are expressed as upper limits of O(10 −9 ) and O(10 −8 ) on the neutrino mixing parameter |U e4 | 2 and |U µ4 | 2 , improving on the earlier searches for heavy neutral lepton production and decays in the kinematically accessible mass range. The X particle is considered a scalar or vector hidden sector mediator decaying to an invisible final state, and upper limits of the decay branching fraction for X masses in the range 10-370 MeV/c 2 are reported for the first time, ranging from O(10 −5 ) to O(10 −7 ). An upper limit of 1.0 · 10 −6 is established at 90% CL on the K + → µ + ννν¯ branching fraction. |
| Document Type: | conference object |
| Language: | unknown |
| Relation: | Collapse authors list. Volpe, R, Akmete, A, Aliberti, R, Ambrosino, F, Ammendola, R, Angelucci, B, Antonelli, A, Anzivino, G, Arcidiacono, R, Bache, T et al (show 90 more authors) , Baeva, A, Baigarashev, D, Bandiera, L, Barbanera, M, Bernhard, J, Biagioni, A, Bician, L, Biino, C, Bizzeti, A, Blazek, T, Bloch-Devaux, B, Boboc, P, Bonaiuto, V, Boretto, M, Bragadireanu, M, Olvera, AB, Britton, D, Brizioli, F, Brunetti, MB, Bryman, D, Bucci, F, Capussela, T, Carmignani, J orcid:0000-0002-1705-1061 , Ceccucci, A, Cenci, P, Cerny, V, Cerri, C, Checcucci, B, Conovaloff, A, Cooper, P, Gil, EC, Corvino, M, Costantini, F, Ramusino, AC, Coward, D, Cretaro, P, D'Agostini, G, Dainton, J, Dalpiaz, P, Danielsson, H, D'Errico, 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, EB, Husek, T, Hutanu, O, Hutchcroft, D orcid:0000-0002-4174-6509 , Iacobuzio, L, Iacopini, E, Imbergamo, E and Jenninger, B (2021) Search for K+ decays to a lepton and invisible particles In: The 22nd International Workshop on Neutrinos from Accelerators, 2021-9-6 - ?. |
| DOI: | 10.22323/1.402.0157 |
| Availability: | https://livrepository.liverpool.ac.uk/3169067/; https://doi.org/10.22323/1.402.0157 |
| Accession Number: | edsbas.AC92EBD1 |
| Database: | BASE |