Measurement of the $e^+e^-\to \pi^+\pi^-\pi^0$ cross section in the centre-of-mass range 0.62 to 3.5$~$GeV at Belle II
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| Authors | Yuki Sue |
|---|---|
| Date | July 18, 2024 |
| Belle II Number | BELLE2-TALK-CONF-2024-106 |
| Abstract | We report a measurement of the e^+e^- -> pi^+ pi^- pi^0 cross section in the energy range from 0.62 GeV to 3.5 GeV using an initial-state radiation technique. We use an e^+e^- data sample corresponding to 191 fb^-1 of integrated luminosity, collected at a centre-of-mass energy at or near the Y(4S) resonance with the BelleII detector at the SuperKEKB collider. The uncertainty at the omega and phi resonances is 2.2%. The leading order hadronic vacuum polarization contribution to the muon anomalous magnetic moment using this result is a_mu(3pi) = (48.91 +/- 0.23_stat +/- 1.07_syst) x 10^-10. |
| Conference | ICHEP 2024 - 42nd International Conference on High Energy Physics |
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- BELLE2-TALK-CONF-2024-106.pdf (versions: 3, 2, 1)