hep-ph
Determination of the $K^{+}\bar{K}^{0}$ scattering length and effective range and its relation to the $a_{0}^{+}(980)$ from the $χ_{c1}\toπ^{+}π^{-}η$ reaction
Hai-Peng Li Jia-Xin Lin Wei-Hong Liang Eulogio Oset