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

Sumitted to PubDB: 2024-09-19

Category: Talk, Visibility: Public

Tags: -

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