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arXiv 1504.06178hep-phhep-ex
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Dalitz衰变$π^0\to e^+e^-γ$的辐射修正

Radiative corrections to the Dalitz decay $π^0\to e^+e^-γ$ revisited

Tomas Husek, Karol Kampf, Jiri Novotny

摘要:

我们重新计算了Dalitz衰变$π^0\to e^+e^-γ$的Mikaelian和Smith辐射修正,超出了软光子近似,即在Dalitz图的整个范围内,对辐射光子没有限制。与以前的计算不同,我们没有忽略比$\mathcal{O}(m^2)$更高阶的项,并且还包括了单圈水平上的单光子不可约贡献和虚μ子圈贡献.结果也可以用于最终状态下较重的粒子。

英文摘要:

We have recalculated the Mikaelian and Smith radiative corrections to the Dalitz decay $π^0\to e^+e^-γ$ beyond the soft-photon approximation, i.e. over the whole range of the Dalitz plot and with no restrictions on the radiative photon. In contrast to the previous calculations, we did not neglect the terms of order higher than $\mathcal{O}(m^2)$ and also included the one-photon-irreducible contribution at one-loop level and the virtual muon loop contribution. The results can then be used also for heavier particles in the final state.

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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