The resonance effect for the CP asymmetry associated with the processω→π^(+)π−π^(0)  

作　　者：Xi-Liang Yuan Gang Lü Na Wang Chao Wang 原喜亮;吕刚;王娜;王超(Institute of Theoretical Physics,College of Physics,Henan University of Technology,Zhengzhou 450001,China;School of Ecology and Environment,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]Institute of Theoretical Physics,College of Physics,Henan University of Technology,Zhengzhou 450001,China [2]School of Ecology and Environment,Northwestern Polytechnical University,Xi'an 710072,China

出　　处：《Chinese Physics C》2025年第2期7-18,共12页中国物理C(英文版)

基　　金：Supported by the Natural Science Foundation of Henan Province,China(232300420115)。

摘　　要：The direct CP asymmetry in the weak decay process of hadrons is commonly attributed to the weak phase of the CKM matrix and the indeterminate strong phase.We propose a method to generate a significant phase difference through the interference betweenρandωmesons,taking into account the G-parity allowed decay process ofω→π+π−π0 and the G-parity-suppressed decay process ofρ^(0)→π^(+)π^(−)π^(0)in B meson decays.This interference can lead to notable changes in the CP asymmetry within the interference region.Additionally,we calculate the integral results for different phase space regions of the four-body decay process.We hope that our work provides valuable theoretical guidance for future experimental investigations on CP asymmetry in these decays.

关 键 词：heavy flavor physics CP asymmetry B meson decay 

分 类 号：O572.33[理学—粒子物理与原子核物理]