J.-S. Li

collaborators

Showing hep-exShow all

2 papers · 1 filter

hep-ex2026

Precision measurement of the $J / ψ \to μ^{+} μ^{-} μ^{+} μ^{-}$ branching fraction and search for a new gauge boson $Z^{'}$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +780

We present a precision measurement of the branching fraction of the rare decay $J / ψ \to μ^{+} μ^{-} μ^{+} μ^{-}$ , and a search for a new gauge boson $Z^{'}$ that couples only to the second…

hep-ex2026

Amplitude analysis of $ψ (3686)$ radiative decays into $π^{0} π^{0}$ system

BESIII Collaboration, M. Ablikim, M. N. Achasov +767

A model-independent amplitude analysis of the $π^{0} π^{0}$ system produced in radiative $ψ (3686)$ decays is presented. The analysis is based on the unique dataset of $(2712.4\pm14…

Precision measurement of the J/ψ→μ+μ−μ+μ− branching fraction and search for a new gauge boson Z′ at BESIII

Amplitude analysis of ψ(3686) radiative decays into π0π0 system

Precision measurement of the $J / ψ \to μ^{+} μ^{-} μ^{+} μ^{-}$ branching fraction and search for a new gauge boson $Z^{'}$ at BESIII

Amplitude analysis of $ψ (3686)$ radiative decays into $π^{0} π^{0}$ system