中文

低能$e^+e^-$强子截面的测量及其对缪子$g-2$的启示

高能物理 - 实验 2014-07-18 v1

摘要

BABAR 实验利用初态辐射(ISR)方法测量了e+ehadronse^+e^- \to \text{hadrons}截面的众多道。对于π+π(γ)\pi^+\pi^-(\gamma)K+K(γ)K^+K^-(\gamma)道,BABAR 开创了基于强子质量谱与μ+μ(γ)\mu^+\mu^-(\gamma)之比的方法。许多系统不确定性在该比值中相互抵消,从而获得了精确测量的截面。这些测量结果已被用于现象学研究,例如确定缪子反常磁矩(g2)μ(g-2)_\mu的强子贡献。

关键词

引用

@article{arxiv.1407.4685,
  title  = {Measurements of low energy e+e- hadronic cross sections and implications for the muon g-2},
  author = {B. Malaescu},
  journal= {arXiv preprint arXiv:1407.4685},
  year   = {2014}
}

备注

4 pages, 1 figure, on behalf of the BABAR collaboration, contribution to the proceedings of the Moriond 2014 conference - QCD session. arXiv admin note: substantial text overlap with arXiv:1404.6887