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arXiv 1407.7995hep-ph
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核子形状因子和对$e^+e^-\to \bar p p γ$的末态辐射修正

Nucleon form factors and final state radiative corrections to $e^+e^-\to \bar p p γ$

Henryk Czyz, Johann H. Kuhn, Szymon Tracz

摘要:

本文提出了质子和中子的电磁形状因子的新参数化方法。质子形状因子很好地描述了BaBar合作组最近的测量结果和早期的类空区形状因子的比值。中子形状因子与早期测量的中子对产生和类空间区域中的形状因子的比率是一致的。这些形状因子在生成器PHOKHARA中实现,该生成器模拟反应$e^+e^-\to \bar p p γ$和$e^+e^-\to \bar n nγ$。研究了末态辐射的影响。

英文摘要:

New parametrisation for the electric and the magnetic form factors of proton and neutron are presented. The proton form factors describe well the recent measurements by BaBar collaboration and earlier ones of the ratio of the form factors in space-like region. The neutron form factors are consistent with earlier measurements of neutron pair production and ratio of the form factors in the space-like region. These form factors are implemented into the generator PHOKHARA, which simulates the reactions $e^+e^-\to \bar p p γ$ and $e^+e^-\to \bar n nγ$. The influence of final state radiation is investigated.

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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