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arXiv 1402.0618hep-exhep-ph
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在BABAR的e+e-到强子截面的测量和μ子g-2的意义

Measurement of e+e- to hadrons cross sections at BABAR, and implication for the muon g-2

Denis Bernard

摘要:

BaBar合作组织有一个密集的项目,研究低能$e^+e^-$碰撞的强子截面,可通过初始态辐射获得。我们的测量允许显着改善μ子异常磁矩的预测值的精度,揭示了当前的预测值和实验值之间的差异$\approx$ 3.5西格玛。我们已经发表了一些结果的过程中有两个到六个强子在最后的状态。我们在这里报告最近的研究结果与构成的主要贡献的强子截面低于3 GeV的最终状态,作为$e^+e^- \rightarrow π^+π^-$,$K^+K^-$,$K_S K_L$和$e^+e^- \rightarrow 4$强子。

英文摘要:

The BaBar Collaboration has an intensive program of studying hadronic cross sections at low-energy $e^+e^-$ collisions, accessible via initial-state radiation. Our measurements allow significant improvements in the precision of the predicted value of the muon anomalous magnetic moment, that shed light on the current $\approx$ 3.5 sigma difference between the predicted and the experimental values. We have published results on a number of processes with two to six hadrons in the final state. We report here the results of recent studies with the final states that constitute the main contribution to the hadronic cross section below 3 GeV, as $e^+e^- \rightarrow π^+π^-$, $K^+K^-$, $K_S K_L$ and $e^+e^- \rightarrow 4$ hadrons.

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。

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