The two-pseudoscalar-meson decay of ${\chi }_{cJ}$ with twist-3 corrections

Ming-Zhen Zhou, Hai-Qing Zhou

The decays of ${\chi }_{cJ}\to {\pi }^{+}{\pi }^{-},K^{+}{K}^{-}$ $(J=0,2)$ are discussed within the standard and modified hard scattering approach when including the contributions from twist-3 distributi…