在精确β衰变时代的形式因子展开
The form factor expansion in the precision $β$ decay era
AI总结：
研究在精确β衰变测试中，核结构修正对标准模型精度的影响，提出基于初值核理论的改进方法，揭示传统近似中的问题与未解难题。
摘要：
在精确标准模型测试中，β衰变一直依赖于选择适当的转变以最小化残余核结构不确定性。然而，随着过去十年中核子水平辐射修正的突破，核结构修正在某些情况下再次成为限制因素。初值核理论的进步为前进提供了路径，但传统形式中的常见反冲阶近似常被忽视。本文批判性地检验其起源，并解决最近解决的问题，同时识别开放性问题。
英文摘要：
Precision tests of the Standard Model using $β$ decay have always relied on a careful choice of transition to minimize residual nuclear structure uncertainties. Following breakthroughs in nucleon-level radiative corrections in the last decade, however, corrections due to nuclear structure are once more a limiting factor in several scenarios. Progress in ab initio nuclear theory provides a path forward, but common recoil-order approximations in traditional formalisms often go unnoticed. Here, we critically examine their origin and address recently resolved and identify open questions.
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。
