Accueil > CERN Experiments > Fixed Target Experiments > NA62 > NA62 Papers > A search for the $K^+ \to \mu^- \nu e^+ e^+$ decay |
Article | |
Report number | arXiv:2211.04818 ; CERN-EP-2022-243 |
Title | A search for the $K^+ \to \mu^- \nu e^+ e^+$ decay |
Related title | A search for the K+ → μ−νe+e+ decay |
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) ; Wong, Vincent Wai Sum (TRIUMF) ; Husek, Tomas (Charles U.) ; Kampf, Karol (Charles U.) ; Zamkovsky, Michal (Charles U. ; CERN) ; 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 ; INFN, Perugia) ; Antonelli, Antonella (Frascati) ; Gonnella, Francesco (Birmingham U.) ; Lamanna, Gianluca (Pisa U.) ; Lanfranchi, Gaia (Frascati) ; Tinti, Gemma (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.) ; Fiorenza, Renato (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. ; CERN) ; 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 ; INFN, Rome) ; 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. ; San Luis Potosi 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) ; Cretaro, Paolo (INFN, Rome) ; Turisini, Matteo (INFN, Rome) ; Frezza, Ottorino (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 ; Moscow, INR) ; 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, Alexander (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 ; Comenius U.) ; Kudenko, Yury (Moscow, INR) ; Kurochka, Viktoriia (Moscow, INR) ; Medvedeva, Mariia (Moscow, INR) ; Mefodev, Aleksandr (Moscow, INR) ; Shaikhiev, Artur (Louvain U., CP3) ; 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. ; Charles U.) ; 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 ; Lancaster U.) ; 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 ; Marseille, CPPM) ; Ruggiero, Giuseppe (Lancaster U. ; Florence U.) ; Ryjov, Vladimir (CERN) ; Schuchmann, Simone (CERN) ; Venditti, Stefano (CERN) ; Brunetti, Maria Brigida (Birmingham U.) ; Bache, Thomas (Birmingham U.) ; Goudzovski, Evgueni (Birmingham U.) ; Henshaw, Jack (Birmingham U.) ; Tomczak, Adam (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.) ; Romano, Angela (Birmingham U.) ; Sergi, Antonino (Birmingham U.) ; Sturgess, Andrew (Birmingham U.) ; Swallow, Joel (Birmingham U. ; CERN) ; 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. ; Liverpool U.) ; Massri, Karim (CERN) ; Maurice, Emilie (Liverpool U. ; LLR, Palaiseau) ; 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 | 2023-03-10 |
Imprint | 08 Nov 2022 |
Number of pages | 12 |
Note | Final version, published in Physics Letters B |
Published in: | Phys. Lett. B 838 (2023) 137679 |
DOI | 10.1016/j.physletb.2023.137679 |
Subject category | Particle Physics - Experiment |
Accelerator/Facility, Experiment | CERN SPS ; NA62 |
Keywords | flavor physics ; rare decay ; conservation law tests ; experimental results ; Lepton number violation ; Lepton flavour violation ; kaon decay |
Abstract | A search for the $K^+ \to \mu^- \nu e^+ e^+$ 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 $8.1 \times 10^{-11}$ is obtained for the decay branching fraction at 90% CL, improving by a factor of 250 over the previous search. |
Other source | Inspire |
Copyright/License | Publication: © 2023-2024 The Author(s) (License: CC BY 4.0), sponsored by SCOAP³ Preprint: © 2022-2024 CERN (License: CC-BY-4.0) |
Submitted by | brigitte.bloch-devaux@cern.ch |