Accès ouvert
2026
preprint
OpenAlex
BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres
The first search for the baryonic decay $ D_{s}^{*+} \to \ p \bar{n} $ is performed using $e^+e^-$ collision data taken at center-of-mass energies between 4.128 and 4.226 GeV, collected by the BESIII experiment and corresponding to an integrated luminosity of 7.33 …
Accès ouvert
2026
preprint
OpenAlex
Zhen Cao, F. Aharonian, Y. X. Bai, Y. W. Bao et autres
We report a day-scale hard lag between GeV and TeV $γ$-ray emission from the HBL 1ES~1959+650 in early 2024. Since the LHAASO-WCDA real-time monitoring system began operation in late 2023, multiple TeV flares from this source have been triggered, including the 1st …
Accès ouvert
2026
preprint
OpenAlex
BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres
Using a sample of $(10087\pm44)\times10^{6}$ $J/ψ$ events collected with the BESIII detector, we investigate the inelastic scattering processes $Λ+p\toΣ^{0}+p$ and $\overlineΛ+p\to\overlineΣ^{0}+p$, exploiting hyperons from $J/ψ\toΛ\overlineΛ$ decays as an effective beam and the beam-pipe materials as targets. The processes $Λ+{}^{9}\mathrm{Be}\toΣ^{0}+p+{}^{8}\mathrm{Li}$ and $\overlineΛ+{}^{9}\mathrm{Be}\to\overlineΣ^{0}+p+{}^{8}\mathrm{Li}$ are …
Accès ouvert
2026
preprint
OpenAlex
BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres
Using a sample of $(2.712 \pm 0.014) \times 10^{9}$ $ψ(3686)$ events collected with the BESIII detector, the decay of $ψ(3686)\to p K^- K_S^0 \bar Ξ^0+c.c.$ is observed for the first time with a statistical significance of $11.5σ$. The branching fraction of this …