手征过滤器
The chiral filter
- Institute for Basic Science(基础科学研究院)
- Center for Exotic Nuclear Studies (CENS)(奇异核研究中心)
机构由 AI 辅助整理,请以论文原文为准。
中文总结 AI 辅助
本文回顾手征过滤器思想,解释热中子俘获质子中冲量近似缺失的9%由π介子交换流填补,并成为精确预言,同时该框架还成功预言了太阳pp聚变。
中文摘要 AI 辅助
热中子俘获质子过程 $np\to d\gamma$ 的测量精度已达到百分之一以内;然而冲量近似遗漏了其中百分之九的贡献。本文追溯了这一差距与Mannque Rho提出的“手征过滤器”思想在五十年间的演变。手征对称性确定了填补该差距的π介子交换流,而幂次计数则解释了为何没有其他贡献与之竞争。这缺失的百分之九由此成为一个预言,且在误差范围内与实验相符。在不受保护的一侧,由氚β衰变确定的一个常数成功预言了太阳$pp$聚变以及{\it hep}过程;$g_A^*$ 仍有待进一步研究。
英文摘要
Thermal neutron capture on a proton, $np\to dγ$, is measured to a fraction of a percent; the impulse approximation misses nine percent of it. This article follows that gap through five decades of an idea of Mannque Rho's, the chiral filter. Chiral symmetry fixes the pion-exchange current that fills the gap, and power counting explains why nothing else competes. The missing nine percent becomes a prediction, correct within errors. On the unprotected side, one constant fixed by tritium beta decay predicted solar $pp$ fusion and the {\it hep} process; $g_A^*$ remains open.