Direct CP violation in multi-body B decays with a00 (980)-f0 (980) mixing

We predict that a00(980)-f0(980) mixing would lead to large CP violation. We calculate the localized direct CP asymmetry in the decays B±→f0(980)[a00(980)]π±→π+π-π± via the a00(980)-f0(980) mixing mechanism based on the hypothetical qq structures of a00(980) and f0(980) in the QCD factorization approach. It is shown that there is a peak for CP violation, which could be as large as 58%, when the invariant mass of ππ is near the masses of a00(980) and f0(980). Since the CP asymmetry is sensitive to a00(980)-f0(980) mixing, measuring the CP-violating parameter in the aforementioned decays could provide a new way to verify the existence of a00(980)-f0(980) mixing and be helpful in clarifying the configuration of the light scalar mesons.