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arXiv 1201.5897hep-ex
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B0 --> K+ K-KS、B+ --> K + K-K+和B+ --> KSKSK + Dalitz图分析中CP破坏的研究

Study of CP violation in Dalitz-plot analyses of B0 --> K+K-KS, B+ --> K+K-K+, and B+ --> KSKSK+

The BABAR Collaboration

备注：
35 pages, 68 postscript figures. v3 - minor modifications to agree with published version
发表信息：
Physical Review D 85, 112010 (2012)
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摘要：

我们进行振幅分析的衰变$B^0 \to K^+K^-K^0_S$，$B^+ \rightarrow K^+K^-K^+$，和$B^+ \to K^0_S K^0_S K^+$，并测量CP违反参数和部分分支分数。这些结果是基于大约$470\times 10^6$ $B\bar{B}$衰变的数据样本，这些数据样本是在SLAC国家加速器实验室的PEP-II非对称能量$B$工厂用BABAR探测器收集的。对于$B^+ \to K^+K^-K^+$，我们发现一个直接CP不对称的$B^+ \to ϕ(1020)K^+$的$A_{CP}= (12.8\pm 4.4 \pm 1.3)%$，它不同于零的$2.8 σ$。对于$B^0 \to K^+K^-K^0_S$，我们测量CP违反相位$β_{\rm eff} (ϕ(1020)K^0_S) = (21\pm 6 \pm 2)^\circ$。对于$B^+ \to K^0_S K^0_S K^+$，我们测量了$A_{CP} = (4 ^{+4}_{-5} \pm 2)%$的总体直接CP不对称性。我们还执行的三个通道的角矩分析，并确定$f_X(1500)$状态可以很好地描述的共振$f_0(1500)$，$f_2^{\prime}(1525)$，和$f_0(1710)$的总和。

英文摘要：

We perform amplitude analyses of the decays $B^0 \to K^+K^-K^0_S$, $B^+ \rightarrow K^+K^-K^+$, and $B^+ \to K^0_S K^0_S K^+$, and measure CP-violating parameters and partial branching fractions. The results are based on a data sample of approximately $470\times 10^6$ $B\bar{B}$ decays, collected with the BABAR detector at the PEP-II asymmetric-energy $B$ factory at the SLAC National Accelerator Laboratory. For $B^+ \to K^+K^-K^+$, we find a direct CP asymmetry in $B^+ \to ϕ(1020)K^+$ of $A_{CP}= (12.8\pm 4.4 \pm 1.3)%$, which differs from zero by $2.8 σ$. For $B^0 \to K^+K^-K^0_S$, we measure the CP-violating phase $β_{\rm eff} (ϕ(1020)K^0_S) = (21\pm 6 \pm 2)^\circ$. For $B^+ \to K^0_S K^0_S K^+$, we measure an overall direct CP asymmetry of $A_{CP} = (4 ^{+4}_{-5} \pm 2)%$. We also perform an angular-moment analysis of the three channels, and determine that the $f_X(1500)$ state can be described well by the sum of the resonances $f_0(1500)$, $f_2^{\prime}(1525)$, and $f_0(1710)$.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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