K+ → l+ν衰变中轻子味普适性的检验
高能物理 - 实验
2011-03-28 v2
摘要
通过测量K介子轻子衰变率K+ → e+ν和K+ → μ+ν的比值RK,在包含59813个重建的K+ → e+ν候选事件(背景污染为(8.71 ± 0.24)%)的样本中,对轻子味普适性进行了精确检验。结果RK = (2.487 ± 0.013) × 10^{-5}与标准模型预期一致。
引用
@article{arxiv.1101.4805,
title = {Test of Lepton Flavour Universality in K+ --> l+nu Decays},
author = {C. Lazzeroni et al.},
journal= {arXiv preprint arXiv:1101.4805},
year = {2011}
}
备注
16 pages, 6 figures. Accepted for publication in Phys. Lett. B