Authors
Eduardo Cortina Gil, Alina Kleimenova, E Minucci, S Padolski, P Petrov, A Shaikhiev, R Volpe, Georgi Georgiev, V Kozhuharov, L Litov, Toshio Numao, Yevgeniy Petrov, B Velghe, D Bryman, J Fu, T Husek, J Jerhot, K Kampf, M Zamkovsky, R Aliberti, G Khoriauli, J Kunze, D Lomidze, L Peruzzo, M Vormstein, R Wanke, P Dalpiaz, M Fiorini, I Neri, A Norton, F Petrucci, H Wahl, A Cotta Ramusino, A Gianoli, E Iacopini, G Latino, M Lenti, Andrea Parenti, A Bizzeti, F Bucci, Antonella Antonelli, G Lanfranchi, G Mannocchi, S Martellotti, M Moulson, T Spadaro, F Ambrosino, T Capussela, M Corvino, D Di Filippo, P Massarotti, M Mirra, M Napolitano, G Saracino, G Anzivino, F Brizioli, E Imbergamo, R Lollini, R Piandani, C Santoni, M Barbanera, P Cenci, B Checcucci, P Lubrano, M Lupi, M Pepe, M Piccini, F Costantini, L Di Lella, N Doble, M Giorgi, S Giudici, G Lamanna, E Lari, E Pedreschi, M Sozzi, C Cerri, R Fantechi, L Pontisso, F Spinella, I Mannelli, G D’Agostini, M Raggi, A Biagioni, E Leonardi, A Lonardo, P Valente, P Vicini, R Ammendola, V Bonaiuto, A Fucci, A Salamon, F Sargeni, Roberta Arcidiacono, B Bloch-Devaux, M Boretto, E Menichetti, E Migliore, D Soldi, Cristina Biino, A Filippi, F Marchetto, J Engelfried, N Estrada-Tristan, AM Bragadireanu, SA Ghinescu, OE Hutanu, T Enik, V Falaleev, V Kekelidze, A Korotkova, D Madigozhin, M Misheva, N Molokanova, S Movchan, I Polenkevich, Yu Potrebenikov, S Shkarovskiy, A Zinchenko, S Fedotov, E Gushchin, A Khotyantsev, Y Kudenko, V Kurochka, M Medvedeva, A Mefodev, S Kholodenko, V Kurshetsov, V Obraztsov, A Ostankov, V Semenov, V Sugonyaev, O Yushchenko, L Bician, T Blazek, V Cerny, Z Kucerova, J Bernhard, A Ceccucci, H Danielsson, N De Simone, F Duval, B Döbrich, L Federici, E Gamberini, L Gatignon, R Guida, F Hahn, EB Holzer, B Jenninger
Publication date
2019/5
Journal
Journal of High Energy Physics
Volume
2019
Issue
5
Pages
1-20
Publisher
Springer Berlin Heidelberg
Description
The results of a search for π 0 decays to a photon and an invisible massive dark photon at the NA62 experiment at the CERN SPS are reported. From a total of 4.12× 10 8 tagged π 0 mesons, no signal is observed. Assuming a kinetic-mixing interaction, limits are set on the dark photon coupling to the ordinary photon as a function of the dark photon mass, improving on previous searches in the mass range 60–110 MeV/c 2. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay, improving the current limit by more than three orders of magnitude.
Scholar articles
E Cortina Gil, A Kleimenova, E Minucci, S Padolski… - Journal of High Energy Physics, 2019