Measurements of the hadronic cross-sections with the CMD-3 and SND detectors at the VEPP-2000 e+e- collider

Abstract

It's good known the difference in 3.5 sigma between the muon (g − 2) experi- mental result and its calculation in Standard Model. To clarify this intriguing discrepancy the new stage of muon (g − 2) measurement is under preparation at Fermi National Labo- ratory. On other hand, regular data taking for measurements of hadron cross section pro- duction in e + e − annihilations is under way since December 2010 at the electron-positron collider VEPP-2000 with the CMD-3 and SND detectors. The collected data sample cor- responds to about 60 inverse picobarns of integrated luminosity per detector in the energy range from 0.32 up to 2 GeV. Preliminary analysis of various hadronic cross sections has been performed.