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arXiv 0812.3357hep-ph
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关于“具有衍生相互作用的辐射性$ϕ$衰变”的简要报告

Brief report on `Radiative $ϕ$ decays with derivative interactions'

Francesco Giacosa, Giuseppe Pagliara

摘要:

本文研究了$ϕ$介子与$f_{0}(980)$和$a_{0}(980)$标量介子直接耦合的辐射$ϕ$ -衰变的线形。后者通过衍生物相互作用分别偶联至$π_0 π_0$和$π_0 η$。虽然k介子环机制通常被认为是辐射$ϕ$衰变的主导机制,但在这里我们测试了一种不同的可能性:我们将k介子环设置为零,并通过仅保留直接耦合来拟合理论曲线。值得注意的是,可以实现满意的拟合,主要是由于标量与赝标量介子的导数相互作用的影响。

英文摘要:

We study the line shapes of radiative $ϕ$-decays with a direct coupling of the $ϕ$ meson to the $f_{0}(980)$ and $a_{0}(980)$ scalar mesons. The latter couple via derivative interactions to $π_0 π_0$ and $π_0 η$, respectively. Although the kaon-loop mechanism is usually regarded as the dominant mechanism in radiative $ϕ$ decays, here we test a different possibility: we set the kaon-loop to zero and we fit the theoretical curves to the data by retaining only the direct coupling. Remarkably, satisfactory fits can be achieved, mainly due to the effects of derivative interactions of scalar with pseudoscalar mesons.

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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