Measurement of the I=1/2 $K\pi$ $\mathcal{S}$-wave amplitude from Dalitz plot analyses of ${\eta }_c\to K\bar{K}\pi$ in two-photon interactions

The BABAR Collaboration, J. P. Lees, others

We study the processes $\gamma \gamma \to K_S^0{K}^{\pm }{\pi }^{\mp }$ and $\gamma \gamma \to K^{+}{K}^{-}{\pi }^0$ using a data sample of 519~$f{b}^{-1}$ recorded with the BaBar detector operating at the SLAC PEP-II asymm…