论文标题
核弱型因素的模型无关确定和对标准模型精确测试的影响
Model-independent determination of nuclear weak form factors and implications for Standard Model precision tests
论文作者
论文摘要
我们通过使用跨核等质层中的多重电荷半径的数据固定均方根电荷弱模型独立地固定均方根电荷弱模型，分析了超允许的β衰变$ t = 1 $，$ j^p = 0^+$ nuclei中的后坐力校正。通过与模型估计进行比较，我们认为统计率函数中现有的理论不确定性$ f $可能被大大低估了。我们讨论了我们提出的策略对标准模型的精确测试的含义，包括对第一行CKM单位性不足的潜在减轻，并激发了电荷半径测量的新实验。
We analyze the recoil corrections in superallowed beta decays of $T=1$, $J^P=0^+$ nuclei by fixing the mean square charge weak radius model-independently using the data of multiple charge radii across the nuclear isotriplet. By comparing to model estimations, we argue that the existing theory uncertainty in the statistical rate function $f$ might have been substantially underestimated. We discuss the implications of our proposed strategy for precision tests of Standard Model, including a potential alleviation of the first-row CKM unitarity deficit, and motivate new experiments for charge radii measurements.
