Speaker
Zhijun Li
(Sun Yat-Sen University)
Description
The BESIII experiment collect data at a symmetric e+e- collider operating at c.m. energy from 2.0 to 4.95 GeV. With the world’s largest threshold production data set of J/ψ (10 billion), ψ(3686) (2.6 billion), and 20 $fb^{-1}$ ofD meson pairs from ψ((3770) decay, we are able to search for various dark sectors produced in $e^+e^-$ annihilation and meson decay processes. In this talk, we report the search for $K_s^0$ invisible decay, search for the massless dark photon with charm FCNC process $D^0→ωγ’$ and $D^0→γγ’$, search for the dark baryon decay in $Ξ^-→π^-+$invisible, search for J/ψ→Φ+invisible, and search for X(17) with ψ(3686)→X(17)$χ_c^0$ and ψ(3686)→γ$χ_c^0$->γX(17)J/ψ.
| Tracks | Flavour Beyond the Standard Model |
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Authors
Fabrizio Bianchi
Zhijun Li
(Sun Yat-Sen University)