Электронный каталог

Статья

Cortina Gil, E.
Search for Dark Photon Decays to *m*+*m*- at NA62 / E.Cortina Gil, A.Baeva, D.Baigarashev, D.Emelyanov, T.Enik, V.Falaleev, D.Kereibay, V.Kekelidze, A.Korotkova, L.Litov, D.Madigozhin, M.Misheva, N.Molokanova, S.Movchan, I.Polenkevich, Yu.Potrebenikov, S.Shkarovskiy, [NA62 Collab.] // Journal of High Energy Physics [Electronic resource]. – 2023. – Vol.2023, No.9. – P.035. – URL: https://doi.org/10.1007/JHEP09(2023)035. – Bibliogr.:24.

The NA62 experiment at CERN, designed to study the ultra-rare decay K+ → π+*n*n^-, 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 × 1017 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/c2.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 346.3в - Мю-мезоатомы, мю-мезомолекулы. Мюоний. Мю-катализ реакций ядерного синтеза. Процессы взаимодействия с веществом