论文标题
康普顿振幅的总和规则及其对质子中子质量差的含义
Sum rule for the Compton amplitude and implications for the proton-neutron mass difference
论文作者
论文摘要
Cottingham公式表达了电磁相互作用对质子 - 独立质量差异的主要贡献，这是向前综合幅度的积分。由于夸克和胶子恢复了，因此该振幅的分散表示需要减法。我们假设渐近行为主要由雷格恩交换所占据主导地位。这导致了总和规则，该规则以可测量的数量来表示减法函数。此总和的评估导致$ m_ {qed}^{p-n} = 0.58 \ pm 0.16 \，\ mbox {mev} $。
The Cottingham formula expresses the leading contribution of the electromagnetic interaction to the proton-neutron mass difference as an integral over the forward Compton amplitude. Since quarks and gluons reggeize, the dispersive representation of this amplitude requires a subtraction. We assume that the asymptotic behaviour is dominated by Reggeon exchange. This leads to a sum rule that expresses the subtraction function in terms of measurable quantities. The evaluation of this sum rule leads to $m_{QED}^{p-n}=0.58\pm 0.16\,\mbox{MeV}$.
