Effect of resonance for $CP$ asymmetry of the decay process ${\bar{B}}_s\to P{\pi }^{+}{\pi }^{-}$ in perturbative QCD

Gang Lü, Yu-Ting Wang, Qin-Qin Zhi

In the framework of Perturbative QCD (PQCD) approach we study the direct $CP$ asymmetry for the decay channel ${\bar{B}}_s\to P{\pi }^{+}{\pi }^{-}$ around the resonance range via the $ρ…