Search for Dark Photon Decays to Μ + Μ − at NA62

E. Cortina Gil,J. Jerhot,A. Kleimenova,N. Lurkin,M. Zamkovsky,T. Numao,B. Velghe,V. W. S. Wong,D. Bryman,Z. Hives,T. Husek,K. Kampf,M. Koval,B. De Martino,M. Perrin-Terrin,A. T. Akmete,R. Aliberti,L. Di Lella,N. Doble,L. Peruzzo,S. Schuchmann,H. Wahl,R. Wanke,P. Dalpiaz,A. Mazzolari,I. Neri,F. Petrucci,M. Soldani,L. Bandiera,A. Cotta Ramusino,A. Gianoli,M. Romagnoni,A. Sytov,M. Lenti,P. Lo Chiatto,R. Marchevski,I. Panichi,G. Ruggiero,A. Bizzeti,F. Bucci,A. Antonelli,V. Kozhuharov,G. Lanfranchi,S. Martellotti,M. Moulson,T. Spadaro,G. Tinti,F. Ambrosino,M. D’Errico,R. Fiorenza,R. Giordano,P. Massarotti,M. Mirra,M. Napolitano,I. Rosa,G. Saracino,G. Anzivino,F. Brizioli,P. Cenci,V. Duk,R. Lollini,P. Lubrano,M. Pepe,M. Piccini,F. Costantini,M. Giorgi,S. Giudici,G. Lamanna,E. Lari,E. Pedreschi,J. Pinzino,M. Sozzi,R. Fantechi,F. Spinella,I. Mannelli,M. Raggi,A. Biagioni,P. Cretaro, O. Frezza, A. Lonardo,M. Turisini, P. Vicini,R. Ammendola,V. Bonaiuto,A. Fucci,A. Salamon,F. Sargeni,R. Arcidiacono,B. Bloch-Devaux,E. Menichetti,E. Migliore,C. Biino,A. Filippi,F. Marchetto,D. Soldi,A. Briano Olvera,J. Engelfried,N. Estrada-Tristan,R. Piandani,M. A. Reyes Santos,P. Boboc,A. M. Bragadireanu,S. A. Ghinescu,O. E. Hutanu,T. Blazek,V. Cerny,Z. Kucerova,R. Volpe,J. Bernhard,L. Bician,M. Boretto,A. Ceccucci,M. Ceoletta,M. Corvino,H. Danielsson,F. Duval,B. Döbrich,L. Federici,E. Gamberini, R. Guida,E. B. Holzer,B. Jenninger,G. Lehmann Miotto,P. Lichard,K. Massri,E. Minucci,M. Noy,V. Ryjov,J. Swallow,J. R. Fry,F. Gonnella,E. Goudzovski,J. Henshaw,C. Kenworthy, C. Lazzeroni,C. Parkinson,A. Romano,J. Sanders,A. Sergi,A. Shaikhiev,A. Tomczak,H. Heath,D. Britton,A. Norton,D. Protopopescu,J. B. Dainton,L. Gatignon,R. W. L. Jones,P. Cooper,D. Coward,P. Rubin,A. Baeva,D. Baigarashev,D. Emelyanov,T. Enik,V. Falaleev,S. Fedotov,K. Gorshanov,E. Gushchin,V. Kekelidze,D. Kereibay,S. Kholodenko,A. Khotyantsev,A. Korotkova,Y. Kudenko,V. Kurochka,V. Kurshetsov,L. Litov,D. Madigozhin,A. Mefodev,M. Misheva,N. Molokanova,V. Obraztsov,A. Okhotnikov,I. Polenkevich, Yu. Potrebenikov,A. Sadovskiy,S. Shkarovskiy,V. Sugonyaev,O. Yushchenko

The Journal of high energy physics/The journal of high energy physics（2023）

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摘要

The NA62 experiment at CERN, designed to study the ultra-rare decay K + → π + νν , 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 μ + μ − pairs is reported, based on a sample of 1 . 4 × 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

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关键词

Beyond Standard Model,Exotics,Fixed Target Experiments,Dark Matter

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