News&Events

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  Observation of the Singly Cabibbo Suppressed Decay D⁰→b₁(1235)⁻e⁺νₑ and evidence for D⁺→b₁(1235)⁰e⁺νₑ The BESIII collaboration has reported “Observation of the Singly Cabibbo Suppressed Decay D⁰→b₁(1235)⁻e⁺νₑ and evidence for D⁺→b₁(1235)⁰e⁺νₑ”. The results have been published in Physical Review Letters on January 13, 2026. [Phys. Rev. Lett. 136, 021801 (2026)].
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  Collaboration Meeting in Winter 2025, Nov. 30- Dec. 5, IHEP The Collaboration Meeting in Winter 2025 was held at IHEP from 30th November to 5th December, 2025. This was a hybrid meeting held in person and also online via ZOOM.
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  Spinning hyperons reveal their inner secrets - new measurement by the BESIII collaboration Spinning hyperons reveal their inner secrets - new measurement by the BESIII collaboration
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  Observation of D⁺→ K_S⁰π⁰μ⁺ν_μ, Test of Lepton Flavor Universality and First Angular Analysis of D⁺→K^*(892^)0barl⁺ν_l The BESIII collaboration has reported “Observation of D+→ KS0π0μ+νμ,, Test of Lepton Flavor Universality and First Angular Analysis of D+→K*(892)0barl+νl”. These results have been published in Physical Review Letters on October 21, 2025. [Phys. Rev. Lett. 135, 171801 (2025)].
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  Single Inclusive 𝜋^± and 𝐾^± Production in 𝑒⁺⁢𝑒⁻ Annihilation
  The BESIII collaboration has founded the validity of isospin symmetry in parton fragmentation processes through measurements of single inclusive π± and K± production. The results were published in Physical Review Letters on Oct. 8, 2025 [Phys. Rev. 135, 151901 (2025)].
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  First measurement of ratio for ϕ meson decays into K_S⁰ K_L⁰ and K⁺ K^- through amplitude analysis of D_S⁺→K_S⁰ K_L⁰ π⁺ The BESIII collaboration has reported the ratio of ϕ meson decays into KS0 KL0 and K+ K- in charm meson decays for the first time. The results have been published in Physics Review Letters on 15 October 2025 [Phys. Rev. Lett. 135, 161902 (2025)].
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  BESIII Physics and Software Workshop in Autumn 2025, Sep. 26-29, USC The BESIII Physics & Software workshop in Autumn 2025 was held during September 26-29th,2025 at University of South China (Hengyang, Hunan province).
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  Precision CP symmetry test and Polarization analysis in Σ⁺ decays The BESIII Collaboration has achieved a milestone in hyperon physics by performing the most precise test of CP symmetry and polarization analysis in Σ+ decays to date. The results have been published in Physical Review Letters on Oct. 1, 2025 [Phys. Rev. Lett. 135, 141804 (2025)].
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  Precise Measurement of the Form Factors in D⁰→K^*(892)^-μ⁺ν_μ  and Test of Lepton Universality with D⁰→K^*(892) Transition The BESIII collaboration has reported “Precise Measurement of the Form Factors in D0→K*(892)-μ+νμ and Test of Lepton Universality with D0→K*(892)-l+νl Decays”. These results have been published in Physical Review Letters on 10 September 2025. [Phys. Rev. Lett. 135, 111803 (2025)].
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  First Measurement of the Decay Dynamics in the Semileptonic Transition of the D⁺(0) into the Axial-vector Meson K₁(1270) The BESIII collaboration has reported “First Measurement of the Decay Dynamics in the Semileptonic Transition of the D+(0) into the Axial-vector Meson K1(1270)”. These results have been published in Physical Review Letters on 25 August 2025. [Phys. Rev. Lett. 135, 091801 (2025)].