BESIII Observes Transverse Polarization of Charmed Baryons for the First Time
he BESIII Collaboration has observed, for the first time, transverse polarization of the lightest charmed baryon, the Λ₊⁺, produced in electron-positron annihilation near the production threshol...

Quantum-entangled hyperons open a new route to testing the Standard Model
BESIII pioneers a study of baryon semileptonic decays through polarization and quantum entanglement, including the first semileptonic form-factor measurements for an antihyperon.

First observation of D⁰⁽⁺⁾ → K̅ ω e⁺ νₑ decays and experimental evidence for the two-pole structure of K̅₁(1270)
The BESIII collaboration recently reported the first observation of the semileptonic decays D⁰ → K⁻ ω e⁺ νₑ and D⁺ → K_S⁰ ω e⁺ νₑ with significances of 8.0σ and 5.8σ, respectively. ...

First Experimental Constraint on the Scalar Current and Precise measurements of D⁰⁽⁺⁾ → K̅ l⁺ νₗ decays
The BESIII collaboration has reported "First Experimental Constraint on the Scalar Current in the D⁰⁽⁺⁾ → K̅ l⁺ νₗ Transition" and "Precise measurements of D⁰ → K⁻ l⁺ νₗ and D⁺ → K...