论文标题
$ \ bar {b} _ {s}^{0} \rightarrowπ^+π^+π^-π^{0}（k^{0}）$ \ bar {b} _ {s} _ {s}^{0}（k^{0}）$中的本地化cp不对称的分析（k^{0}）$
Analysis of localized CP asymmetry in $\bar{B}_{s}^{0} \rightarrow π^+π^-π^{0}(K^{0})$
论文作者
论文摘要
对$ \ bar {b} _ {s}^{0} \rightArrowπ^{+}π^{ - }π^{0}（k^{0}）$的局部CP不对称的研究。本文的创新是考虑到三粒子$ρ^0（770）$，$ω（782）$和$ ϕ（1020）$干扰效应。通常，$ω（782）$和$ ϕ（1020）$都可以衰减到$π^+π^ - $对中，可能会导致isospin对称性破坏的极小。 Nevertheless, our analysis shows that $\bar{B}_{s}^{0} \rightarrow π^+π^-π^{0}(K^{0})$ decay process can bring differential CP asymmetry about $65\%$ ($36\%$) because of isospin symmetry breaking.与将来的实验数据相比，我们整合了不变质量上的CP不对称性，并获得衰减$ \ bar {b} _ {s} _ {s}^{0} \rightArrowπ^+π^+π^+π^-π^-π^ - 0}（k^0}（k^{0}）的局部CP不对称值。我们发现，在不变的质量值$ m（π^{+}π^{ - }）$下，有一个明显的信号，低于$ρ（770）^{0} $，带有衰减$ \ bar {b} _ {b} _ {s} _ {s}^0}^{0} {0} {0} {0} {0} {0} \ rightarrow =^^$^^^^^ - ^^^ - -
An investigation about localized CP asymmetries for the processes of $\bar{B}_{s}^{0} \rightarrow π^{+}π^{-}π^{0} (K^{0})$ is presented in this paper. The innovation of this paper is that there is a consideration of three-particle $ρ^0(770)$, $ω(782)$ and $ϕ(1020)$ interferences effect. Generally, $ω(782)$ and $ϕ(1020)$ both can decay into $π^+π^-$ pair where can cause extremely small contribution from isospin symmetry breaking. Nevertheless, our analysis shows that $\bar{B}_{s}^{0} \rightarrow π^+π^-π^{0}(K^{0})$ decay process can bring differential CP asymmetry about $65\%$ ($36\%$) because of isospin symmetry breaking. To better compared with the data from experimental in the future, we integrate CP asymmetry over the invariant mass and obtain localized CP asymmetry value for the decay $\bar{B}_{s}^{0} \rightarrow π^+π^-π^{0} (K^{0})$. We find that there is an evident signal about CP asymmetry at invariant mass value $m(π^{+}π^{-})$ below the mass of $ρ(770)^{0}$ with the decay $\bar{B}_{s}^{0} \rightarrow π^+π^{-}π^{0}$.
