PT Journal AU Actis, Sea Rodrigo, G TI Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data SO European Physical Journal C JI Eur. Phys. J. C PY 2010 BP 585 EP 686 VL 66 IS 3-4 DI 10.1140/epjc/s10052-010-1251-4 LA English AB We present the achievements of the last years of the experimental and theoretical groups working on hadronic cross section measurements at the low-energy e (+) e (-) colliders in Beijing, Frascati, Ithaca, Novosibirsk, Stanford and Tsukuba and on tau decays. We sketch the prospects in these fields for the years to come. We emphasise the status and the precision of the Monte Carlo generators used to analyse the hadronic cross section measurements obtained as well with energy scans as with radiative return, to determine luminosities and tau decays. The radiative corrections fully or approximately implemented in the various codes and the contribution of the vacuum polarisation are discussed. ER