A program of measuring the light hadrons production in exclusive e+e− → hadrons processes is in place at BABAR with the aim to improve the calculation of the hadronic contribution to the muon g−2. We present the most recent results obtained by using the full data set of about 470 fb−1 collected by the BABAR experiment at the PEP-II e+e− collider at a center-of-mass energy of about 10.6 GeV. In particular, we report the results on the channels e+e− → π+π−π0π0, e+e− → π+π−π0π0π0, e+e− → π+π−π0η, and e+e− → π+π−η. The first reaction, in particular, presently gives the main uncertainty on the total hadronic cross section in the energy region between 1 and 2 GeV.
|Journal||Proceedings of Science|
|Publication status||Published - 2019|
|Event||2019 European Physical Society Conference on High Energy Physics, EPS-HEP 2019 - Ghent, Belgium|
Duration: 10 Jul 2019 → 17 Jul 2019