Abstract
In Ref. [1] the BESIII collaboration published a cross section measurement of the process e+e−→π+π− in the energy range between 600 and 900 MeV. In this corrigendum, we report a corrected evaluation of the statistical errors in terms of a fully propagated covariance matrix. The correction also yields a reduced statistical uncertainty for the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, which now reads as aμππ,LO(600−900MeV)=(368.2±1.5stat±3.3syst)×10−10. The central values of the cross section measurement and of aμππ,LO, as well as the systematic uncertainties remain unchanged.
| Original language | English (US) |
|---|---|
| Article number | 135982 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 812 |
| DOIs |
|
| State | Published - Jan 10 2021 |
Bibliographical note
Publisher Copyright:© 2015 The Author(s)
Keywords
- BESIII
- Covariance matrix
- Hadronic cross section
- Initial state radiation
- Muon anomaly
- Pion form factor
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