arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1407.4685hep-ex
收藏

低能e+e强子截面的测量及其对μ介子g-2的意义

Measurements of low energy e+e- hadronic cross sections and implications for the muon g-2

B. Malaescu

摘要:

利用ISR方法,在BABAR实验上测量了e+e->强子截面的许多通道。对于pi+pi-(gamma)和K+K-(gamma)通道,BABAR开创了基于强子质量谱和mu+mu-(gamma)之间的比率的方法。许多系统的不确定性在比率中抵消,因此精确测量截面。这些测量已被用于唯象学研究,如确定强子对μ子(g-2)_μ的反常磁矩的贡献。

英文摘要:

Numerous channels of the cross section e+e- --> hadrons have been measured by the BABAR experiment using the ISR method. For the pi+pi-(gamma) and K+K-(gamma) channels, BABAR has pioneered the method based on the ratio between the hadronic mass spectra and mu+mu-(gamma). Many systematic uncertainties cancel in the ratio, hence the precise measured cross sections. These measurements have been exploited for phenomenological studies, like the determination of the hadronic contribution to the anomalous magnetic moment of the muon (g-2)_mu.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑