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arXiv 2003.08379hep-phhep-ex
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由$π^0$和$P\!\rightarrow\!Vγ$衰变产生的$η$ -PDMATHAAC混合

$π^0$-$η$-$η^{\prime}$ mixing from $V\!\rightarrow\!Pγ$ and $P\!\rightarrow\!Vγ$ decays

Rafel Escribano, Emilio Royo

摘要:

本文提出了一个包含同位旋对称性破缺的增强唯象模型。然后,该模型被用于统计拟合的辐射跃迁$V\!Pγ$($V=ρ$,$K^*$,$ω$,$ϕ$和$P=π$,$K$,$η$,$η^{\prime}$)的最新的实验数据和估计的混合角之间的三个赝标态消失的第三分量的同位旋得到。所执行拟合的质量良好,例如$χ^2_{\textrm{min}}/\textrm{d.o.f} = 1.9$。目前的实验不确定性允许同位旋对称性破坏的置信水平约为$2.5σ$。

英文摘要:

An enhanced phenomenological model that includes isospin-symmetry breaking is presented in this letter. The model is then used in a number of statistical fits to the most recent experimental data for the radiative transitions $V\!Pγ$ ($V=ρ$, $K^*$, $ω$, $ϕ$ and $P=π$, $K$, $η$, $η^{\prime}$) and estimations for the mixing angles amongst the three pseudoscalar states with vanishing third-component of isospin are obtained. The quality of the performed fits is good, e.g. $χ^2_{\textrm{min}}/\textrm{d.o.f} = 1.9$. The current experimental uncertainties allow for isospin symmetry violations with a confidence level of approximately $2.5σ$.

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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