| Article | |
| Report number | arXiv:2101.12304 ; CERN-EP-2021-018 |
| Title | Search for $K^+$ decays to a muon and invisible particles |
| Author(s) |
Cortina Gil, Eduardo (Louvain U., CP3) ; Minucci, Elisa (Louvain U., CP3 ; CERN ; Frascati) ; Padolski, Sergey (Louvain U., CP3) ; Petrov, Plamen (Louvain U., CP3) ; Velghe, Bob (TRIUMF) ; Bryman, Douglas (British Columbia U. ; TRIUMF) ; Fu, Ji (British Columbia U.) ; Numao, Toshio (TRIUMF) ; Petrov, Yevgeniy (TRIUMF) ; Husek, Tomas (Charles U.) ; Kampf, Karol (Charles U.) ; Zamkovsky, Michal (Charles U.) ; Jerhot, Jan (Charles U. ; Louvain U., CP3) ; Aliberti, Riccardo (Mainz U., Inst. Phys.) ; Khoriauli, Gia (Mainz U., Inst. Phys.) ; Kunze, Jonas (Mainz U., Inst. Phys.) ; Lomidze, David (Mainz U., Inst. Phys.) ; Marchevski, Radoslav (CERN) ; Peruzzo, Letizia (Mainz U., Inst. Phys.) ; Vormstein, Mario (Mainz U., Inst. Phys.) ; Wanke, Rainer (Mainz U., Inst. Phys.) ; Cotta Ramusino, Angelo (INFN, Ferrara) ; Dalpiaz, Pietro (Ferrara U.) ; Fiorini, Massimiliano (Ferrara U.) ; Gamberini, Enrico (CERN) ; Gianoli, Alberto (INFN, Ferrara) ; Neri, Ilaria (Ferrara U.) ; Norton, Alan (Ferrara U. ; Glasgow U.) ; Petrucci, Ferruccio (Ferrara U.) ; Wahl, Heinrich (Ferrara U. ; Mainz U., Inst. Phys.) ; Bizzeti, Andrea (INFN, Florence) ; Bucci, Francesca (INFN, Florence) ; Iacopini, Enrico (Florence U.) ; Latino, Giuseppe (Florence U.) ; Lenti, Massimo (Florence U.) ; Parenti, Andrea (Florence U.) ; Volpe, Roberta (Louvain U., CP3 ; Comenius U.) ; Antonelli, Antonella (Frascati) ; Gonnella, Francesco (Birmingham U.) ; Lamanna, Gianluca (Pisa U.) ; Lanfranchi, Gaia (Frascati) ; Martellotti, Silvia (Frascati) ; Moulson, Matthew (Frascati) ; Kozhuharov, Venelin (Frascati) ; Litov, Leandar (Dubna, JINR) ; Georgiev, Georgi (Frascati) ; Raggi, Mauro (Rome U.) ; Spadaro, Tommaso (Frascati) ; Ambrosino, Fabio (Naples U.) ; Capussela, Tiziana (Naples U.) ; Corvino, Michele (Naples U. ; CERN) ; Di Filippo, Domenico (Naples U.) ; Massarotti, Paolo (Naples U.) ; Mirra, Marco (Naples U.) ; Napolitano, Marco (Naples U.) ; Saracino, Giulio (Naples U.) ; Anzivino, Giuseppina (Perugia U.) ; Imbergamo, Ermanno (Perugia U.) ; Lollini, Riccardo (Perugia U.) ; Santoni, Cristiano (Perugia U.) ; Brizioli, Francesco (Perugia U.) ; Barbanera, Mattia (INFN, Perugia) ; Cenci, Patrizia (INFN, Perugia) ; Checcucci, Bruno (INFN, Perugia) ; Duk, Viacheslav (Birmingham U. ; INFN, Perugia) ; Lupi, Matteo (INFN, Perugia) ; Pepe, Monica (INFN, Perugia) ; Piccini, Mauro (INFN, Perugia) ; Lubrano, Pasquale (INFN, Perugia) ; Costantini, Flavio (Pisa U.) ; Doble, Niels (Pisa U. ; Mainz U., Inst. Phys.) ; Giorgi, Marcello (Pisa U.) ; Giudici, Sergio (Pisa U.) ; Lari, Enrico (Pisa U.) ; Pinzino, Jacopo (CERN ; INFN, Pisa) ; Pontisso, Luca (INFN, Pisa) ; Sozzi, Marco (Pisa U.) ; Di Lella, Luigi (Pisa U. ; Mainz U., Inst. Phys.) ; Mannelli, Italo (Pisa, Scuola Normale Superiore) ; Cerri, Claudio (INFN, Pisa) ; Fantechi, Riccardo (INFN, Pisa) ; Pedreschi, Elena (Pisa U.) ; Piandani, Roberto (Perugia U.) ; Spinella, Franco (INFN, Pisa) ; Biagioni, Andrea (INFN, Rome) ; D'Agostini, Giulio (Rome U.) ; Leonardi, Emanuele (INFN, Rome) ; Lonardo, Alessandro (INFN, Rome) ; Valente, Paolo (INFN, Rome) ; Vicini, Piero (INFN, Rome) ; Ammendola, Roberto (Rome U., Tor Vergata) ; Bonaiuto, Vincenzo (Rome U., Tor Vergata) ; De Simone, Nicola (CERN) ; Federici, Luca (CERN) ; Fucci, Adolfo (Rome U., Tor Vergata) ; Salamon, Andrea (Rome U., Tor Vergata) ; Sargeni, Fausto (Rome U., Tor Vergata) ; Arcidiacono, Roberta (Turin U.) ; Biino, Cristina (INFN, Turin) ; Bloch-Devaux, Brigitte (Turin U.) ; Boretto, Marco (Turin U. ; CERN) ; Filippi, Alessandra (INFN, Turin) ; Iacobuzio, Lorenza (Birmingham U.) ; Marchetto, Flavio (INFN, Turin) ; Menichetti, Ezio (Turin U.) ; Migliore, Ernesto (Turin U.) ; Soldi, Dario (Turin U.) ; Engelfried, Jürgen (San Luis Potosi U.) ; Estrada-Tristan, Nora (San Luis Potosi U.) ; Bragadireanu, Alexandru Mario (Bucharest, IFIN-HH) ; Ghinescu, Stefan Alexandru (Bucharest, IFIN-HH) ; Hutanu, Ovidiu Emanuel (Bucharest, IFIN-HH) ; Enik, Temur (Dubna, JINR) ; Falaleev, Valeri (Dubna, JINR) ; Kekelidze, Vladimir (Dubna, JINR) ; Korotkova, Anna (Dubna, JINR) ; Madigozhin, Dmitry (Dubna, JINR) ; Misheva, Milena (Dubna, JINR) ; Molokanova, Natalia (Dubna, JINR) ; Movchan, Sergei (Dubna, JINR) ; Polenkevich, Irina (Dubna, JINR) ; Potrebenikov, Yuri (Dubna, JINR) ; Shkarovskiy, Sergey (Dubna, JINR) ; Zinchenko, Andrey (Dubna, JINR) ; Baeva, Aigul (Dubna, JINR) ; Baigarashev, Dosbol (Dubna, JINR) ; Emelyanov, Dmitry (Dubna, JINR) ; Fedotov, Sergei (Moscow, INR) ; Khotyantsev, Alexey (Moscow, INR) ; Gushchin, Evgeny (Moscow, INR) ; Kleimenova, Alina (Louvain U., CP3) ; Kudenko, Yury (Moscow, INR) ; Kurochka, Viktoriia (Moscow, INR) ; Medvedeva, Mariia (Moscow, INR) ; Mefodev, Aleksandr (Moscow, INR) ; Shaikhiev, Artur (Louvain U., CP3 ; Moscow, INR) ; Kholodenko, Sergey (Serpukhov, IHEP) ; Kurshetsov, Viktor (Serpukhov, IHEP) ; Obraztsov, Vladimir (Serpukhov, IHEP) ; Ostankov, Aleksandr (Serpukhov, IHEP) ; Semenov, Vitali (Serpukhov, IHEP) ; Sugonyaev, Valentin (Serpukhov, IHEP) ; Yushchenko, Oleg (Serpukhov, IHEP) ; Bician, Lubos (Comenius U. ; CERN) ; Blazek, Tomas (Comenius U.) ; Cerny, Vladimir (Comenius U.) ; Koval, Michal (CERN ; Charles U.) ; Kucerova, Zuzana (Comenius U.) ; Ceccucci, Augusto (CERN) ; Bernhard, Johannes (CERN) ; Danielsson, Hans (CERN) ; Döbrich, Babette (CERN) ; Duval, Francois (CERN) ; Gatignon, Lau (CERN) ; Guida, Roberto (CERN) ; Hahn, Ferdinand (CERN) ; Holzer, Eva Barbara (CERN) ; Jenninger, Berthold (CERN) ; Laycock, Paul (CERN) ; Lehmann Miotto, Giovanna (CERN) ; Lichard, Peter (CERN) ; Mapelli, Alessandro (CERN) ; Noy, Matthew (CERN) ; Palladino, Vito (CERN) ; Perrin-Terrin, Mathieu (CERN ; Louvain U., CP3) ; Ruggiero, Giuseppe (Lancaster U.) ; Ryjov, Vladimir (CERN) ; Schuchmann, Simone (CERN ; Mainz U., Inst. Phys.) ; Venditti, Stefano (CERN) ; Brunetti, Maria Brigida (Birmingham U.) ; Bache, Thomas (Birmingham U.) ; Goudzovski, Evgueni (Birmingham U.) ; Henshaw, Jack (Birmingham U.) ; Lazzeroni, Cristina (Birmingham U.) ; Fascianelli, Valeria (Birmingham U.) ; Lurkin, Nicolas (Birmingham U. ; Louvain U., CP3) ; Newson, Francis (Birmingham U.) ; Parkinson, Christopher (Birmingham U. ; Louvain U., CP3) ; Romano, Angela (Birmingham U.) ; Sergi, Antonino (Birmingham U.) ; Sturgess, Andrew (Birmingham U.) ; Swallow, Joel (Birmingham U.) ; Heath, Helen (Bristol U.) ; Page, Ryan (Bristol U.) ; Trilov, Stoyan (Bristol U.) ; Angelucci, Bruno (Glasgow U.) ; Britton, David (Glasgow U.) ; Protopopescu, Dan (Glasgow U.) ; Graham, Connor (Glasgow U.) ; Jones, Roger William Lewis (Lancaster U.) ; Dainton, John Bourke (Lancaster U.) ; Fry, John Richard (Birmingham U.) ; Fulton, Liam (Liverpool U.) ; Hutchcroft, David (Liverpool U.) ; Carmignani, Joseph (Lancaster U.) ; Massri, Karim (CERN) ; Maurice, Emilie (Liverpool U.) ; Wrona, Bozydar (Liverpool U.) ; Conovaloff, Adam (George Mason U.) ; Cooper, Peter (George Mason U.) ; Coward, David (George Mason U.) ; Rubin, Philip David (George Mason U.) |
| Corporate author(s) | The NA62 collaboration |
| Publication | 2021-05-10 |
| Imprint | 07 Apr 2021 |
| Number of pages | 10 |
| Note | Updated version published as Phys.Lett. B816 (2021) 136259 |
| Published in: | Phys. Lett. B 816 (2021) 136259 |
| DOI | 10.1016/j.physletb.2021.136259 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN SPS ; NA62 |
| Keywords | flavor physics ; exotics ; rare decay ; experimental results ; Heavy Neutral Lepton ; neutrino mixing ; Hidden sector mediator |
| Abstract | The NA62 experiment at CERN reports searches for $K^+\to\mu^+N$ and $K^+\to\mu^+\nu X$ 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 ${\cal O}(10^{-8})$ of the neutrino mixing parameter $|U_{\mu4}|^2$ for $N$ masses in the range 200-384 MeV/$c^2$ and lifetime exceeding 50 ns. 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 ${\cal O}(10^{-5})$ to ${\cal O}(10^{-7})$. An improved upper limit of $1.0\times 10^{-6}$ is established at 90% CL on the $K^+\to\mu^+\nu\nu\bar\nu$ branching fraction. |
| Other source | Inspire |
| Copyright/License | publication: © 2021-2024 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³ preprint: © 2021-2024 CERN (License: CC-BY-4.0) |
| Submitted by | brigitte.bloch-devaux@cern.ch |
Запись создана 2020-12-11, последняя модификация 2023-12-14