Revisiting the Twist-3 Distribution Amplitudes of $K$ Meson within the QCD Background Field Approach

Tao Zhong, Xing-Gang Wu, Hua-Yong Han +3

In the present paper, we investigate the kaon twist-3 distribution amplitudes (DAs) ${\varphi }_{p,\sigma }^K$ within the QCD background field approach. The $S{U}_f(3)$-breaking effects are studied…