Jingqing Zhang, for the BESIII Collaboration
Published 2014-03-02Version 1
Observation of the $X(1840)$ in the $3(\pi^+\pi^-)$ invariant mass in $J/\psi\rightarrow\gamma 3(\pi^+\pi^-)$ at BESIII is reviewed. With a sample of $225.3\times10^6$ $J/\psi$ events collected with the BESIII detector at BEPCII, the $X(1840)$ is observed with a statistical significance of $7.6\sigma$. The mass, width and product branching fraction of the $X(1840)$ are determined. The decay $\eta^\prime\rightarrow 3(\pi^+\pi^-)$ is searched for, and the upper limit of the branching fraction is set at the 90% confidence level.
Comments: 4 pages, 3 figures, proceeding of PIC2013
Observation of a structure at 1.84 GeV/c$^2$ in the $3(π^+π^-)$ mass spectrum in $J/ψ\rightarrow γ3(π^+π^-)$ decays
Observation of $J/ψ\rightarrow p\bar{p}a_{0}(980)$ at BESIII
Search for hadronic transition $χ_{cJ}\toη_{c}π^{+}π^{-}$ and observation of $χ_{cJ}\to K\bar{K}πππ$
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