Mixing mechanism for the $J^P=0^{+}$ mesons

Hungchong Kim, K. S. Kim

There are three scalar nonets in the Particle Data Group (PDG), one of which includes [$a_0(980),K_0^{\ast }(700)$], another includes [$a_0(1450),K_0^{\ast }(1430)$], and the third includes…