Extraction of the electron mass from g-factor measurements on light hydrogenlike ions
AbstractThe determination of the electron mass from Penning-trap measurements with C5+12 ions and from theoretical results for the bound-electron g factor is described in detail. Some recently calculated contributions slightly shift the extracted mass value. Prospects of a further improvement of the electron mass are discussed both from the experimental and from the theoretical points of view. Measurements with He+4 ions will enable a consistency check of the electron-mass value, and in the future an improvement of the He4 nuclear mass and a determination of the fine-structure constant.