π介子素寿命的测量
高能物理 - 实验
2019-08-13 v3
摘要
我们报告了欧洲核子研究中心（CERN）DIRAC 合作组（PS212）在测量π介子素寿命方面的进展。基于 2001-2003 年间在镍靶上收集的数据，我们在π介子素寿命的测量中达到了 11% 的精度，这对应于以 6% 的准确度测量 S 波π-π散射长度差 |a0-a2|。
引用
@article{arxiv.0809.4963,
title = {Measurement of the pionium lifetime},
author = {M. Zhabitsky},
journal= {arXiv preprint arXiv:0809.4963},
year = {2019}
}
备注
Parallel talk at ICHEP08, Philadelphia, USA, July 2008. 4 pages, LaTeX, 3 eps figures. v2: Term with pion mass squared was introduced into formula (1) to be consistent with scattering lengths normalization. v3: template update by the ICHEP08 organizing committee