$\mathbf {{{\boldsymbol X}{(2540)}}}$ $\boldsymbol I\boldsymbol G(\boldsymbol J{}^{PC}) = 0{}^{+}(0{}^{++})$

INSPIRE search
MASS ${\mathrm {(MeV)}}$ WIDTH ${\mathrm {(MeV)}}$ DOCUMENT ID TECN  COMMENT
$ 2539 \pm14 {}^{+38}_{-14} $ 274 +77-61 +126-163
UEHARA
2013
BELL ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
References:
UEHARA 2013
PTEP 2013 123C01 High-Statistics Study of ${{\mathit K}_S^0}$ Pair Production in Two-Photon Collisions