Mass and Decay Constant of $I=1/2$ Scalar Meson In QCD Sum Rule

Dong-Sheng Du, Jing-Wu Li, Mao-Zhi Yang

We calculate the mass and decay constant of $I=1/2$ scalar mesons composed of quark-antiquark pairs based on QCD sum rule. The quauk-antiquark pairs can be $s\bar{q}$ or $q\bar{s}$…