Resumen
Based on (1.0087 ± 0.0044) × 1010J/ψ events collected with the BESIII detector at the BEPCII e+e− storage ring, we search for KS0 invisible decays via the J/ψ →ϕKS0KS0 process. No significant signal is observed, and the upper limit of the branching fraction of these invisible decays is set at 8.4 × 10−4 at the 90% confidence level. This is the first experimental search for KS0 invisible decays.
| Idioma original | Inglés |
|---|---|
| Número de artículo | 92 |
| Publicación | Journal of High Energy Physics |
| Volumen | 2025 |
| N.º | 5 |
| DOI | |
| Estado | Publicada - may. 2025 |