H. Sun

collaborators

3 papers

hep-ex2026

Amplitude analysis and branching fraction measurement of the decay $D^{0} \to K^{+} K^{-} π^{0} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +770

An amplitude analysis of the singly Cabibbo-suppressed decay $D^{0} \to K^{+} K^{-} π^{0} π^{0}$ is performed, for the first time, to determine the relative magnitudes and phases of differen…

hep-ex2026

Search for a massless particle beyond the Standard Model in the $Ξ^{0} \to Λ + invisible$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +765

A search for a massless beyond-standard-model particle is performed in the decay $Ξ^{0} \to Λ + invisible$ using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events collected with…

hep-ex2024

Observation of the charmonium decay $η_{c} \to γ γ$ in $J / ψ \to γ η_{c}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +662

Using $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, the decay $η_{c} \to γ γ$ in $J / ψ \to γ η_{c}$ is observed. We determine the p…

Amplitude analysis and branching fraction measurement of the decay D0→K+K−π0π0

Search for a massless particle beyond the Standard Model in the Ξ0→Λ+invisible decay

Observation of the charmonium decay ηc​→γγ in J/ψ→γηc​

Amplitude analysis and branching fraction measurement of the decay $D^{0} \to K^{+} K^{-} π^{0} π^{0}$

Search for a massless particle beyond the Standard Model in the $Ξ^{0} \to Λ + invisible$ decay

Observation of the charmonium decay $η_{c} \to γ γ$ in $J / ψ \to γ η_{c}$