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Search for dark photon decays to $\mu^+ \mu^-$ at NA62

The NA62 experiment at CERN, designed to study the ultra-rare decay $K^+ \rightarrow \pi^+ \nu \bar\nu$, has also collected data in beam-dump mode. In this configuration, dark photons may be produced by protons dumped on an absorber and reach a decay volume beginning 80 m downstream. A search for da...

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Detalles Bibliográficos
Autores principales: Cortina Gil, Eduardo, Jerhot, Jan, Kleimenova, Alina, Lurkin, Nicolas, Zamkovsky, Michal, Numao, Toshio, Velghe, Bob, Wong, Vincent Wai Sum, Bryman, Douglas, Hives, Zdenko, Husek, Tomas, Kampf, Karol, Koval, Michal, De Martino, Bianca, Perrin-Terrin, Mathieu, Akmete, Atakan Tugberk, Aliberti, Riccardo, Di Lella, Luigi, Doble, Niels, Peruzzo, Letizia, Schuchmann, Simone, Wahl, Heinrich, Wanke, Rainer, Dalpiaz, Pietro, Mazzolari, Andrea, Neri, Ilaria, Petrucci, Ferruccio, Soldani, Mattia, Bandiera, Laura, Cotta Ramusino, Angelo, Gianoli, Alberto, Romagnoni, Marco, Sytov, Alexei, Lenti, Massimo, Lo Chiatto, Prisco, Marchevski, Radoslav, Panichi, Ilaria, Ruggiero, Giuseppe, Bizzeti, Andrea, Bucci, Francesca, Antonelli, Antonella, Kozhuharov, Venelin, Lanfranchi, Gaia, Martellotti, Silvia, Moulson, Matthew, Spadaro, Tommaso, Tinti, Gemma, Ambrosino, Fabio, D'Errico, Mariaelena, Fiorenza, Renato, Giordano, Raffaele, Massarotti, Paolo, Mirra, Marco, Napolitano, Marco, Potrebenikov, Yuri, Rosa, Ilaria, Saracino, Giulio, Anzivino, Giuseppina, Brizioli, Francesco, Cenci, Patrizia, Duk, Viacheslav, Lollini, Riccardo, Lubrano, Pasquale, Pepe, Monica, Piccini, Mauro, Costantini, Flavio, Giorgi, Marcello, Giudici, Sergio, Lamanna, Gianluca, Lari, Enrico, Pedreschi, Elena, Pinzino, Jacopo, Sozzi, Marco, Fantechi, Riccardo, Spinella, Franco, Mannelli, Italo, Raggi, Mauro, Biagioni, Andrea, Cretaro, Paolo, Frezza, Ottorino, Lonardo, Alessandro, Turisini, Matteo, Vicini, Piero, Ammendola, Roberto, Bonaiuto, Vincenzo, Fucci, Adolfo, Salamon, Andrea, Sargeni, Fausto, Arcidiacono, Roberta, Bloch-Devaux, Brigitte, Menichetti, Ezio, Migliore, Ernesto, Biino, Cristina, Filippi, Alessandra, Marchetto, Flavio, Soldi, Dario, Briano Olvera, Alejandro, Engelfried, Jürgen, Estrada-Tristan, Nora, Piandani, Roberto, Reyes Santos, Marco Antonio, Boboc, Petre, Bragadireanu, Alexandru Mario, Ghinescu, Stefan Alexandru, Hutanu, Ovidiu Emanuel, Blazek, Tomas, Cerny, Vladimir, Kucerova, Zuzana, Volpe, Roberta, Bernhard, Johannes, Bician, Lubos, Boretto, Marco, Ceccucci, Augusto, Ceoletta, Marco, Corvino, Michele, Danielsson, Hans, Duval, Francois, Döbrich, Babette, Federici, Luca, Gamberini, Enrico, Guida, Roberto, Holzer, Eva Barbara, Jenninger, Berthold, Lehmann Miotto, Giovanna, Lichard, Peter, Massri, Karim, Minucci, Elisa, Noy, Matthew, Ryjov, Vladimir, Swallow, Joel, Fry, John Richard, Gonnella, Francesco, Goudzovski, Evgueni, Henshaw, Jack, Kenworthy, Chandler, Lazzeroni, Cristina, Parkinson, Christopher, Romano, Angela, Sanders, Jack, Sergi, Antonino, Shaikhiev, Artur, Tomczak, Adam, Heath, Helen, Britton, David, Norton, Alan, Protopopescu, Dan, Dainton, John Bourke, Gatignon, Lau, Jones, Roger William Lewis, Cooper, Peter, Coward, David, Rubin, Philip David, Baeva, Aigul, Baigarashev, Dosbol, Emelyanov, Dmitry, Enik, Temur, Falaleev, Valeri, Fedotov, Sergei, Gorshanov, Konstantin, Gushchin, Evgeny, Kekelidze, Vladimir, Kereibay, Dias, Kholodenko, Sergey, Khotyantsev, Alexey, Korotkova, Anna, Kudenko, Yury, Kurochka, Viktoriia, Kurshetsov, Viktor, Litov, Leandar, Madigozhin, Dmitry, Mefodev, Aleksandr, Misheva, Milena, Molokanova, Natalia, Obraztsov, Vladimir, Okhotnikov, Artem, Polenkevich, Irina, Potrebenikov, Yu., Sadovskiy, Alexander, Shkarovskiy, Sergey, Sugonyaev, Valentin, Yushchenko, Oleg
Lenguaje:eng
Publicado: 2023
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP09(2023)035
http://cds.cern.ch/record/2842900
Descripción
Sumario:The NA62 experiment at CERN, designed to study the ultra-rare decay $K^+ \rightarrow \pi^+ \nu \bar\nu$, has also collected data in beam-dump mode. In this configuration, dark photons may be produced by protons dumped on an absorber and reach a decay volume beginning 80 m downstream. A search for dark photons decaying in flight to $\mu^+ \mu^-$ pairs is reported, based on a sample of $1.4 \times 10^{17}$ protons on dump collected in 2021. No evidence for a dark photon signal is observed. A region of the parameter space is excluded at 90% CL, improving on previous experimental limits for dark photon masses between 215 and 550 MeV/$c^2$.