Observation of an excess of dicharmonium events in the four-muon final state with the ATLAS detector

AAD, G., ABBOTT, B., ABELING, K., CHUDOBA, J., FEDERIČOVÁ, P., HEJBAL, J., JAČKA, P., KEPKA, O., KROLL, J., KUPČO, A., LATOŇOVÁ, V., LOKAJÍČEK, M., LYSÁK, R., MARČIŠOVSKÝ, M., MIKEŠTÍKOVÁ, M., NĚMEČEK, S., ŠÍCHO, P., STAROBA, P., SVATOŠ, M., TAŠEVSKÝ, M. Observation of an excess of dicharmonium events in the four-muon final state with the ATLAS detector. Physical Review Letters. 2023, 131(15), 151902. ISSN 0031-9007. E-ISSN 1079-7114. Available: doi: 10.1103/PhysRevLett.131.151902.