/ hep-ex CERN-EP-2017-311


Search for heavy neutral lepton production in $K^+$ decays


Cortina Gil, Edoardo (Louvain U.) ; Minucci, Elisa (Louvain U.) ; Padolski, Sergey (Louvain U.) ; Petrov, Plamen (Louvain U.) ; Velghe, Bob (TRIUMF) ; Kozhuharov, Venelin (Frascati) ; Litov, Leandar (Sofiya U.) ; Georgiev, Georgi (Frascati) ; Bryman, Douglas (British Columbia U.) ; Fu, Ji (British Columbia U.) ; Numao, Toshio (TRIUMF) ; Husek, Tomas (Charles U.) ; Kampf, Karol (Charles U.) ; Zamkovsky, Michal (Charles U.) ; Aliberti, Riccardo (U. Mainz, PRISMA) ; Khoriauli, Gia (U. Mainz, PRISMA) ; Kunze, Jonas (U. Mainz, PRISMA) ; Lomidze, David (U. Mainz, PRISMA) ; Marchevski, Radoslav (U. Mainz, PRISMA) ; Peruzzo, Letizia (U. Mainz, PRISMA) ; Vormstein, Mario (U. Mainz, PRISMA) ; Wanke, Rainer (U. Mainz, PRISMA) ; Cotta Ramusino, Angelo (INFN, Ferrara) ; Dalpiaz, Pietro (INFN, Ferrara) ; Fiorini, Massimiliano (INFN, Ferrara) ; Gamberini, Enrico (CERN) ; Gianoli, Alberto (INFN, Ferrara) ; Neri, Ilaria (INFN, Ferrara) ; Norton, Alan (INFN, Ferrara) ; Petrucci, Ferruccio (INFN, Ferrara) ; Wahl, Heinrich (INFN, Ferrara) ; Bizzeti, Andrea (INFN, Florence) ; Bucci, Francesca (INFN, Florence) ; Iacopini, Enrico (INFN, Florence) ; Latino, Giuseppe (INFN, Florence) ; Lenti, Massimo (INFN, Florence) ; Volpe, Roberta (INFN, Florence) ; Antonelli, Antonella (Frascati) ; Gonnella, Francesco (Frascati) ; Lamanna, Gianluca (Pisa U.) ; Lanfranchi, Gaia (Frascati) ; Mannocchi, Giampaolo (Frascati) ; Martellotti, Silvia (Frascati) ; Moulson, Matthew (Frascati) ; Raggi, Mauro (Frascati) ; Spadaro, Tommaso (Frascati) ; Ambrosino, Fabio (INFN, Naples) ; Capussela, Tiziana (INFN, Naples) ; Corvino, Michele (INFN, Naples) ; Di Filippo, Domenico (INFN, Naples) ; Massarotti, Paolo (INFN, Naples) ; Mirra, Marco (INFN, Naples) ; Napolitano, Marco (INFN, Naples) ; Saracino, Giulio (INFN, Naples) ; Anzivino, Giuseppina (Perugia U.) ; Imbergamo, Ermanno (Perugia U.) ; Lollini, Riccardo (Perugia U.) ; Santoni, Cristiano (Perugia U.) ; Brizioli, Francesco (Perugia U.) ; Barbanera, Mattia (INFN, Pisa) ; Cenci, Patrizia (INFN, Perugia) ; Checcucci, Bruno (INFN, Perugia) ; Duk, Viacheslav (INFN, Perugia) ; Lupi, Matteo (CERN) ; Pepe, Monica (INFN, Perugia) ; Piccini, Mauro (INFN, Perugia) ; Lubrano, Pasquale (INFN, Perugia) ; Costantini, Flavio (Pisa U.) ; Doble, Niels (Pisa U.) ; Giorgi, Marcello (Pisa U.) ; Giudici, Sergio (Pisa U.) ; Pinzino, Jacopo (CERN) ; Pontisso, Luca (INFN, Pisa) ; Sozzi, Marco (Pisa U.) ; Di Lella, Luigi (Pisa U.) ; Mannelli, Italo (Pisa, Scuola Normale Superiore) ; Cerri, Claudio (INFN, Pisa) ; Fantechi, Riccardo (INFN, Pisa) ; Pedreschi, Elena (Pisa U.) ; Piandani, Roberto (INFN, Pisa) ; 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 (INFN, Rome2) ; Bonaiuto, Vincenzo (INFN, Rome2) ; De Simone, Nicola (CERN) ; Federici, Luca (CERN) ; Fucci, Adolfo (INFN, Rome2) ; Salamon, Andrea (INFN, Rome2) ; Sargeni, Fausto (INFN, Rome2) ; Arcidiacono, Roberta (Turin U.) ; Biino, Cristina (INFN, Turin) ; Bloch-Devaux, Brigitte (Turin U.) ; Boretto, Marco (Turin U.) ; Filippi, Alessandra (INFN, Turin) ; Iacobuzio, Lorenza (Turin 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, Alexander (Dubna, JINR) ; Fedotov, Sergei (Moscow, INR) ; Khotyantsev, Alexey (Moscow, INR) ; Gushchin, Evgeny (Moscow, INR) ; Kleimenova, Alina (Louvain U.) ; Kudenko, Yury (Moscow, INR) ; Kurochka, Viktoriia (Moscow, INR) ; Medvedeva, Mariia (Moscow, INR) ; Mefodev, Aleksandr (Moscow, INR) ; Shaikhiev, Artur (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.) ; Blazek, Tomas (Comenius U.) ; Cerny, Vladimir (Comenius U.) ; Koval, Michal (CERN) ; Kucerova, Zuzana (Comenius U.) ; Ceccucci, Augusto (CERN) ; Danielsson, Hans (CERN) ; Döbrich, Babette (CERN) ; Duval, Francois (CERN) ; Gatignon, Lau (CERN) ; Guida, Roberto (CERN) ; Hahn, Ferdinand (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 (Louvain U.) ; Ruggiero, Giuseppe (CERN) ; Ryjov, Vladimir (CERN) ; Venditti, Stefano (CERN) ; Brunetti, Maria Brigida (Birmingham U.) ; Goudzovski, Evgueni (Birmingham U.) ; Lazzeroni, Cristina (Birmingham U.) ; Fascianelli, Valeria (Birmingham U.) ; Lurkin, Nicolas (Birmingham U.) ; Newson, Francis (Birmingham U.) ; Parkinson, Christopher (Birmingham U.) ; 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.) ; Dainton, John Bourke (U. Liverpool (main)) ; Fry, John Richard (U. Liverpool (main)) ; Fulton, Liam (U. Liverpool (main)) ; Hutchcroft, David (U. Liverpool (main)) ; Massri, Karim (CERN) ; Maurice, Emilie (U. Liverpool (main)) ; Wrona, Bozydar (U. Liverpool (main)) ; Conovaloff, Adam (George Washington U.) ; Cooper, Peter (George Washington U.) ; Coward, David (George Washington U.) ; Rubin, Philip David (George Washington U.)

Abstract: 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 $|U_{\ell 4}|^2$ ($\ell=e,\mu$) for heavy neutral lepton mass in the range $170-448~{\rm MeV}/c^2$. This improves on the results from previous production searches in $K^+$ decays, setting more stringent limits and extending the mass range.

Web-Page: http://inspirehep.net/record/1640276/files/acceptance.png; http://inspirehep.net/record/1640276/files/ses-no-labels.png; http://inspirehep.net/record/1640276/files/ul-br.png; http://inspirehep.net/record/1640276/files/ke2-mmiss2.png; http://inspirehep.net/record/1640276/files/km2-mmiss2.png; http://inspirehep.net/record/1640276/files/resolution.png; http://inspirehep.net/record/1640276/files/world.png; http://inspirehep.net/record/1640276/files/na62-sketch.png; http://inspirehep.net/record/1640276/files/ke2-events.png; http://inspirehep.net/record/1640276/files/km2-events.png; http://inspirehep.net/record/1640276/files/arXiv:1712.00297.pdf


Note: *Temporary entry*

Total numbers of views: 386
Numbers of unique views: 206
 Record created 2018-01-09, last modified 2018-01-09


External links:
Download fulltextFulltext
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)