Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J.W.Bergauer, T.Chatterjee, S.Damanakis, K.Gürpınar Güler, EmineGüler, Yalçın2024-07-212024-07-2120242470-00102470-0029https://doi.org/10.1103/PhysRevD.109.L111101https://hdl.handle.net/20.500.13091/5890The Formula Presented decay has been observed with a statistical significance in excess of five standard deviations. The analysis is based on an event sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of Formula Presented. Normalizing to the Formula Presented decay mode leads to a branching fraction of Formula Presented, a value that is consistent with the standard model prediction. © 2024 CERN, for the CMS Collaboration.eninfo:eu-repo/semantics/openAccessArticle10.1103/PhysRevD.109.L1111012-s2.0-85195858537