1303.3676 (Zhen-Hua Zhang et al.)

CP violation in $B^{\pm} \rightarrow π^{\pm}π^{+}π^{-}$ in the
region with low invariant mass of one $π^{+}π^{-}$ pair    [PDF]

Zhen-Hua Zhang, Xin-Heng Guo, Ya-Dong Yang

Recently, the large CP asymmetries in $B^\pm\to\pi^\pm\pi^+\pi^-$ decays have been found to localize in $m_{\pi^+\pi^-}^2<0.4 \text{GeV}^2$ by the LHCb Collaboration. We find such large localized CP asymmetries may due to the interference between a light scalar and $\rho^0(770)$ intermediate resonances. Consequently, we argue that the distribution of CP asymmetries in the Dalitz plots of three body B decays could be very helpful for identifying the presence of scalar resonance.

View original: http://arxiv.org/abs/1303.3676