论文标题
比较低$ q^2 $的质子电磁形式的结果
Comparison of results for the electromagnetic form factors of the proton at low $Q^2$
论文作者
论文摘要
这项工作的目标是比较质子$ g^p_e $（electry）的sachs形式的五个参数化，而$ g^p_m $（磁）以低$ 4 $ -MOMENTUM TRANSSENT $ Q^2 $。将表明，一个简单的模型基于两个偶极子，该模型承认参数为RMS电荷半径$ r_ {e; p} $和proton的RMS磁性半径$ r_ {m; p} $，足以实现低eNerergy pion-nuceleon（$ pion-nucleon $）的相位移位分析（PSAS）的目的。通过本工作的参数化，当前在$πn$相互作用的ETH模型中使用的电磁形式因子的替换将使从PSA中删除该研究计划的最大依赖性依赖性源。
The goal in this work is the comparison of five parameterisations of the Sachs form factors of the proton $G^p_E$ (electric) and $G^p_M$ (magnetic) at low $4$-momentum transfer $Q^2$. It will be shown that a simple model, based on two dipoles which admit as parameters the rms electric charge radius $r_{E;p}$ and the rms magnetic radius $r_{M;p}$ of the proton, suffices for the purposes of the phase-shift analyses (PSAs) of the low-energy pion-nucleon ($πN$) data. The replacement of the electromagnetic form factors, currently used in the ETH model of the $πN$ interaction, by the parameterisation of this work will enable the removal from the PSAs of this research programme of the largest part of the dependence on extraneous sources.
