Impact of Mixing on the Localized Violations of the Decay
Jing-Juan Qi (Zhejiang Wanli University, China); Xuan Zhang (Zhejiang Wanli University, China); Chao Wang (Center for Ecological and Environmental Sciences, Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, China); Zhen-Yang Wang (Physics Department, Ningbo University, China); Xin-Heng Guo (College of Nuclear Science and Technology, Beijing Normal University, China)
In the framework of the QCD factorization approach, we study the localized $ CP $ violations of the $ CP $ decay with and without the $ CP $ mixing mechanism and observe that the localized $ CP $ violation can be enhanced by this mixing effect when the mass of the $ CP $ pair is in the vicinity of the $ CP $ resonance. The corresponding theoretical prediction results are $ CP $ ( $ CP $ with the central value form) and $ CP $ ( $ CP $ with the central value form), respectively. Meanwhile, we also calculate the branching fraction of the $ CP $ decay, which is consistent with the experimental results. We suggest that the $ CP $ mixing mechanism should be considered when theoretically and experimentally studying the $ CP $ violation of the B or D meson decays.
