We present the first experimental search for the rare charm decay D0→π0νν¯. 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→π0νν¯ 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.

Search for the decay D0 →π0ν ν ¯

Garzia, I.;
2022

Abstract

We present the first experimental search for the rare charm decay D0→π0νν¯. 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→π0νν¯ 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
Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M. R.; An, Q.; Bai, X. H.; Bai, Y.; Bakina, O.; Bal...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2501754
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