Observation of D_s^+→η^' μ^+ ν_μ, Precision Test of Lepton Flavor Universality with D_s^+→η^((')) l^+ ν_l, and First Measurements of D_s^+→η^((')) μ^+ ν_μ Decay Dynamics The BESIII collaboration has reported the observation of Ds+→η' μ+νμ, precision test of lepton flavor universality with Ds+→η(') l+ νl, and first measurements of Ds+→η(') μ+ νμ decay dynamics. These results have been published in Physical Review Letters on 28 February 2024. [Phys. Rev. Lett. 132, 091802 (2024)].

Complete determination of Σ^+ hyperon electromagnetic form factors in timelike region The BESIII collaboration recently reported “Determination of the Σ+ timelike electromagnetic form factors”, which has been published in Physical Review Letters on Feb. 22, 2024 [Phys. Rev. Lett. 132, 081904 (2024)].

First measurement of the decay asymmetry in the pure W-boson-exchange decay Λ_c^+→Ξ^0 K^+ In the January 17, 2024 issue of Physical Review Letters（Phys. Rev. Lett. 132, (2024) 031801）, the BESIII Collaboration reported the first measurement of the decay asymmetry in the pure W-boson-exchange decay Λc+→Ξ0 K+. The decay asymmetry parameter, α, is measured to be 0.01±0.16 (stat.)±0.03(syst.), and Δ is measured to be 3.84±0.90 (stat.)±0.17(syst.). Meanwhile, the other two decay asymmetry parameters, β and γ, and also dynamics parameters are also derived in this process.

Observation of a vector charmoniumlike state at 4.7 GeV/c2 and search for Zcs in e+e-→K+K-J/ψ In the November 21, 2023 issue of Physical Review Letters, the BESIII Collaboration reported the discovery of a vector charmoniumlike state, dubbed the Y(4710), in e+e-→K+K-J/ψ process. The Y(4710) is observed to decay toK+K-J/ψ with a mass of 4.708GeV/c2. Meanwhile, the search for exotic tetraquark states, dubbed Zcs, are also conducted in this process.

The precision test of CP symmetry in hyperon to neutron decays BESIII Collaboration has performed a precise measurement of CP symmetry in the decay of Σ+ hyperon to neutron. This research has been published in Physics Review Letters on Nov. 9th, 2023 [Phys. Rev. Lett. 131, 191802 (2023)].

BESIII measures the production mechanism of the charmed baryon with unprecedented precision BESIII Collaboration has measured the production mechanism of the charmed baryon, Λc+, in electron-positron annihilation with unprecedented precision, published online on Nov. 9, 2023 by Physics Review Letters [Phys. Rev. Lett. 131, 191901 (2023)].

Precise measurement of the e^+e^- → Ds^(*+)Ds^(*-) cross sections at center-of-mass energies from threshold to 4.95 GeV The BESIII collaboration has presented the most precise measurements of the e+e-→ Ds*+Ds*- cross sections at center-of-mass energies from threshold to 4.95 GeV. The result has been published in Physical Review Letters on October 13th, 2023. [Phys. Rev. Lett.131.151903].

Observation of the Narrow Structure near the pΛbar Threshold The BESIII collaboration has recently reported the observation of a narrow structure near the pΛbar threshold in the e+e-→pK-Λbar+c.c. process. Its quantum number JP is determined for the first time and the resonance parameters are also determined. The detailed results have been published in the journal Physical Review Letters 131, 151901 on Oct. 10 2023.

First Experimental Study of the Weak Decay D_s^*→eν_e at BESIII The first experimental study of the weak decay Ds*→eνe with entangled Ds-Ds* pairs has been presented by BESIII collaboration. The results are published in the journal Phys. Rev. Lett. 131, 141802 (2023) on Oct. 6 2023.

Search for Λ-Λbar Baryon-Number-Violating Oscillations The BESIII collaboration has recently presented their results on searching for oscillations between Λbar and Λ in the decay Jpsi to p K- Λbar +c.c. This is the first constraint on the rate of hyperon-anti-hyperon oscillations. The detailed results have been published in the journal Physical Review Letters 131, 121801 on Sep. 19 2023.