1. Search for Leptonic Decays of Dark Photons at NA62.
- Author
-
Cortina Gil E, Jerhot J, Kleimenova A, Lurkin N, Zamkovsky M, Numao T, Velghe B, Wong VWS, Bryman D, Hives Z, Husek T, Kampf K, Koval M, De Martino B, Perrin-Terrin M, Döbrich B, Lezki S, Akmete AT, Aliberti R, Di Lella L, Doble N, Peruzzo L, Schuchmann S, Wahl H, Wanke R, Dalpiaz P, Neri I, Petrucci F, Soldani M, Bandiera L, Cotta Ramusino A, Gianoli A, Romagnoni M, Sytov A, Lenti M, Lo Chiatto P, Marchevski R, Panichi I, Ruggiero G, Bizzeti A, Bucci F, Antonelli A, Kozhuharov V, Lanfranchi G, Martellotti S, Moulson M, Spadaro T, Tinti G, Ambrosino F, D'Errico M, Fiorenza R, Giordano R, Massarotti P, Mirra M, Napolitano M, Rosa I, Saracino G, Anzivino G, Brizioli F, Cenci P, Duk V, Lollini R, Lubrano P, Pepe M, Piccini M, Costantini F, Giorgi M, Giudici S, Lamanna G, Lari E, Pedreschi E, Pinzino J, Sozzi M, Fantechi R, Spinella F, Mannelli I, Raggi M, Biagioni A, Cretaro P, Frezza O, Lonardo A, Turisini M, Vicini P, Ammendola R, Bonaiuto V, Fucci A, Salamon A, Sargeni F, Arcidiacono R, Bloch-Devaux B, Menichetti E, Migliore E, Biino C, Filippi A, Marchetto F, Soldi D, Briano Olvera A, Engelfried J, Estrada-Tristan N, Piandani R, Reyes Santos MA, Rodriguez Rivera KA, Boboc P, Bragadireanu AM, Ghinescu SA, Hutanu OE, Blazek T, Cerny V, Kucerova Z, Volpe R, Bernhard J, Bician L, Boretto M, Ceccucci A, Ceoletta M, Corvino M, Danielsson H, Duval F, Federici L, Gamberini E, Guida R, Holzer EB, Jenninger B, Lehmann Miotto G, Lichard P, Massri K, Minucci E, Noy M, Ryjov V, Swallow J, Fry JR, Gonnella F, Goudzovski E, Henshaw J, Kenworthy C, Lazzeroni C, Parkinson C, Romano A, Sanders J, Sergi A, Shaikhiev A, Tomczak A, Heath H, Britton D, Norton A, Protopopescu D, Dainton JB, Gatignon L, Jones RWL, Cooper P, Coward D, Rubin P, Baeva A, Baigarashev D, Emelyanov D, Enik T, Falaleev V, Fedotov S, Gorshanov K, Gushchin E, Kekelidze V, Kereibay D, Kholodenko S, Khotyantsev A, Korotkova A, Kudenko Y, Kurochka V, Kurshetsov V, Litov L, Madigozhin D, Mefodev A, Misheva M, Molokanova N, Obraztsov V, Okhotnikov A, Polenkevich I, Potrebenikov Y, Sadovskiy A, Shkarovskiy S, Sugonyaev V, and Yushchenko O
- Abstract
The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of 1.4×10^{17} protons on dump collected in 2021. No evidence for a dark photon signal is observed. The combined result for dark photon searches in lepton-antilepton final states is presented and a region of the parameter space is excluded at 90% confidence level, improving on previous experimental limits for dark photon mass values between 50 and 600 MeV/c^{2} and coupling values in the range 10^{-6} to 4×10^{-5}. An interpretation of the e^{+}e^{-} search result in terms of the emission and decay of an axionlike particle is also presented.
- Published
- 2024
- Full Text
- View/download PDF