News&Events

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  Precise Measurement of Born Cross Sections for e-e+→ DDbar at √s = 3.80 − 4.95 GeV On August 21, 2024, the BESIII collaboration has published an article entitled “Precise Measurement of Born Cross Sections for e-e+→ DDbar at √s=3.80-4.95 GeV” in Physical Review Letters [Phys. Rev. Lett. 133 (2024) 081901], reporting groundbreaking measurements of Born cross sections for the e+e-→ D0D0bar and D+D-bar reactions at 150 center-of-mass energies between 3.80 and 4.95 GeV with unprecedented precision.
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  Collaboration Meeting in Summer 2024, July 2--6, Liaoning University The BESIII Collaboration meeting in Summer 2024 will be held at Liaoning University (Shenyang, Liaoning province) from July 2nd – 6th, 2024.
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  First study of antihyperon-nucleon scattering The BESIII collaboration recently reported the first study of antihyperon-nucleon scattering Λbarp→Λbarp with “Λbar beam” from the decay J/ψ→ΛΛbar based on 10 billion J/ψ data. The results have been published recently in Physics Review Letters on June 4, 2024 [Phys. Rev. Lett. 132, 231902 (2024)].
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  The BESIII Collaboration Discovered a Glueball-like Particle – X(2370) The Beijing Electron Positron Collider II (BEPCII) has recently made a significant achievement. The BESIII experiment at BEPCII performed the first measurements of the quantum numbers of the X(2370) particle, along with its mass, production, and decay properties, and found that they are consistent with the features of a glueball, which has long been the subject of intensive experimental searches. This important result was published in the journal of Physical Review Letters on May 2nd as an Editor’s Suggestion.
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  Observation of structures in the processes e+e-→ωχc1 and ωχc2 The BESIII collaboration recently reported the observation of two resonance structures in the processes e+e-→ωχc1 and e+e-→ωχc2. One structure is likely to be the well-established resonance ψ(4415), and another is observed for the first time. The results have been published in Physics Review Letters on April 19, 2024 [Phys. Rev. Lett. 132, 161901 (2024)].
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  Renowned for Two Decades, Charm Revealed Now BESIII Collaboration has performed the first measurement of the lineshape of X(3872) via a coupled-channel analysis. This research has been published in Physics Review Letters on 12, April 2024 [Phys. Rev. Lett. 132, 151903].
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  Evidence of a new subatomic particle The BESIII collaboration recently reported the observation of an anomalous line shape around ppbar mass threshold in the J/ψ→γ3(π+π-) decay, which indicates the existence of a ppbar bound state. This paper has been published online in Physical Review Letters on April 9, 2024. [Phys. Rev. Lett. 132,151904 (2024)]
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  Observation of the pure W-emission decay D+ -> KS0a0(980)+ The BESIII collaboration recently reported “Observation of D+ -> KS0a0(980)+ in the amplitude analysis of D+ -> KS0π+η”, which has been published in Physical Review Letters on March 2024 [Phys. Rev. Lett., 132, 131903 (2024)].
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  Understanding the nature of f0(980) in the Ds semileptonic decay BESIII collaboration has reported the first hadronic form factor measurement of the semileptonic decay D_s^+→f_0 (980)e^+ ν_e with f_0 (980)→π^+ π^- and the first search of the decay D_s^+→f_0 (500)e^+ ν_e with f_0 (500)→π^+ π^-. These results have been published in Physical Review Letters on 05 April 2024. [Phys. Rev. Lett. 132,141901(2024)].
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  Discovery of the SU(3)-breaking effect in kaon wave function and first observation of ψ(3770) charmless decays to K_S^0 K_L^0 BESIII Collaboration has precisely measured the effect of different quarks on the wave function of kaon and reported the first observation of ψ(3770) charmless decays to K_S^0 K_L^0. This research has been published in Physics Review Letters on Mar. 25th, [Phys. Rev. Lett. 132, 131901 (2024)].