Recent results on hadronic cross sections measurements at BABAR for the g−2 calculation

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.