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${\mathit{X}}_{\mathbf{2}}\mathbf{(}\mathbf{2210}\mathbf{)}$ $\mathit{I}{}^G(\mathit{J}{}^{PC})=0{}^{+}(2{}^{++})$

INSPIRE   PDGID:

M300A05

MASS $(\mathrm{MeV})$ WIDTH $(\mathrm{MeV})$ DOCUMENT ID TECN  COMMENT $2210\pm 60$ $360\pm 120$ 1 KLEMPT 2022 RVUE $\mathit{J}/\psi$ $\to$ $\gamma {\pi }^0{\pi }^0$ , $\gamma {\mathit{K}}_S^0$ ${\mathit{K}}_S^0$ 1  Fit of the tensor partial waves from BES3 in the multipole basis. Might be a cluster of $\mathit{J}{}^{PC}=2{}^{++}$ resonances. The ratio of decay widths $\mathit{K}{\mathit{K}}^{-}$ $/$ $\pi \pi$ is $0.23$ $\pm 0.05$.

References

KLEMPT 2022 PL B830 137171 Search for the tensor glueball