Strange axial-vector mesons mixing angle

De-Min Li, Zhen Li

The masses of the $K_1{(}^3{P}_1)$ and $K_1{(}^1{P}_1)$ are considered in a nonrelativistic constituent quark model, and the absolute value of the $K_1{(}^3{P}_1)-K_1{(}^1{P}_1)$ mixing angle is d…