标题： $a_1(1260)$介子在过程$e^+e^-\to π^+π^-π^0$中的表现 显示英文标题

标题： Manifestation of $a_1(1260)$ meson in the process $e^+e^-\to π^+π^-π^0$

摘要： 该过程$e^+e^-\to \pi^+\pi^-\pi^0$的电荷不对称性在考虑电子（正电子）纵向极化的情况下进行研究。 不对称性是由于产生π介子的振幅在C奇和C偶态之间的干涉引起的。 这是中间态中$a_1(1260)$介子的表现。 极化会导致微分截面中的额外关联，这简化了该过程的实验研究。 研究表明，电荷不对称性可以达到几个百分点。 显示英文摘要

摘要： The charge asymmetry in the process $e^+e^-\to \pi^+\pi^-\pi^0$ is studied taking into account a longitudinal polarization of electrons (positrons). The asymmetry arises due to interference of amplitudes corresponding to production of pions in C-odd and C-even states. It is a manifestation of $a_1(1260)$ meson in the intermediate state. Polarization leads to additional correlations in the differential cross section, which simplifies the experimental study of the process. It is shown that the charge asymmetry can reach several percent.