Triangle mechanism in the decay process B₀→J/ψf₀(980)(a₀(980))

Abstract The role of the triangle mechanism in decay processes and K^0a_0\to K^0 \pi^0\eta is probed. In these processes, singularity appears from B^0 into J/\psi\phi , then, ϕ decays K^0\bar{K^0} merged f_0 or a_0 which finally \pi^+\pi^- respectively. We find that this leads to a around M_{\rm inv}(K^0f_0(a_0))\approx1520\ {\rm MeV} gives sizable branching fractions {\rm{Br}}(B_0\to K^0f_0\to K^0\pi^+\pi^-)=7.67\times10^{-7} ${\rm{Br}}(B_0\to K^0a_0 K^0\pi^0\eta)= 1.42\times10^{-7}$?> . This investigation can help us obtain information scalar meson f_0(980) a_0(980)