BESⅢ Observes New Leptonic Decay Mode for D Meson

来源：Bulletin of the Chinese Academy of Sciences, 2019, 33(04): 241.

<正>The Beijing Spectrometer(BESIII) collaboration has reported the world’s first observation of the decay D+ →τ+ν, which is the second type of pure leptonic decay of the D+ meson, in a newly published Physical Review Letters paper. The paper has been highlighted by the journal as an "Editors’ Suggestion."