114In衰变中的β不对称参数
核实验
2009-12-31 v2
摘要
本文报道了114In纯Gamow-Teller衰变的β不对称参数A。低温核取向方法与基于GEANT4的模拟代码相结合，首次能够详细处理散射和磁场的影响。结果A = -0.994 ± 0.010统计 ± 0.010系统，构成了迄今为止核β跃迁不对称参数最精确的数值。该值与标准模型预测值A = -1一致，并为张量型带电弱流提供了新的限制。
引用
@article{arxiv.0901.0081,
title = {Beta asymmetry parameter in the decay of 114In},
author = {F. Wauters and V. De Leebeeck and I. Kraev and M. Tandecki and E. Traykov and S. Van Gorp and N. Severijns and D. Zakoucky},
journal= {arXiv preprint arXiv:0901.0081},
year = {2009}
}
备注
11 pages, 2 figures; additional information was added on systematic effects, the magnetic field map and the calculation of the Qcos(theta) values