Constraints on short-lived axions from the decay π+→e+e−e+ν

Constraints on short-lived axions from the decay π+→e+e−e+ν
复制标题

衰变 π+→e+e−e+ν 对短命轴子的约束

DOI:
10.1016/0370-2693(86)90201-7
复制
发表时间:
1986
期刊:
影响因子:
4.4
通讯作者:
M. Wise
M. Wise
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
L. Krauss;M. Wise

文献摘要

被引文献

相似文献

使用手性拉格朗日技术,计算衰变模式 π+→ ae+ν 的预期分支比为 3×10−6(mu/md)(ma/1.8 MeV)2,其中 a 是最近提出的短寿命轴子变体,因此对该速率的早期估计得到了纠正。最近的测量将衰变 π+→ e+e−e+ν 限制在 10−10 水平,这清楚地排除了这样的轴子。
Using chiral lagrangian techniques an expected branching ratio of 3×10−6(mu/md)(ma/1.8 MeV)2is calculated for the decay mode π+→ ae+ν, where a is a recently proposed short-lived axion variant, and thus earlier estimates of this rate are corrected. A recent measurement limits the decay π+→ e+e−e+ν at the 10−10level, which clearly rules out such an axion.