Ablikim, M.Achasov, M.N.Adlarson, P.Ahmed, S.Çetin, Serkant AliKolcu, Onur Buğra2022-05-232022-05-232022Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Aliberti, R., . . . BESIII Collaboration. (2022). Search for the decay D0 →π0ν ν ¯. Physical Review D, 105(7) doi:10.1103/PhysRevD.105.L0711022470-0010https://doi.org/10.1103/PhysRevD.105.L071102https://hdl.handle.net/20.500.12713/2727We present the first experimental search for the rare charm decay D0??0??¯. It is based on an e+e- collision sample consisting of 10.6×106 pairs of D0D¯0 mesons collected by the BESIII detector at s=3.773 GeV, corresponding to an integrated luminosity of 2.93 fb-1. A data-driven method is used to ensure the reliability of the background modeling. No significant D0??0??¯ signal is observed in data and an upper limit of the branching fraction is set to be 2.1×10-4 at the 90% confidence level. This is the first experimental constraint on charmed-hadron decays into dineutrino final states. © 2022 authors.eninfo:eu-repo/semantics/openAccessArticle1057WOS:0008098984000012-s2.0-85129259371Q110.1103/PhysRevD.105.L071102Q1