Physics Reach of Electron-Capture Neutrino Beams

To complete the picture of neutrino oscillations two fundamental parameters need to be measured, θ 13 and δ . The next generation of long baseline neutrino oscillation experiments –superbeams, betabeams and neutrino factories– indeed take aim at measuring them. Here we explore the physics reach of a new candidate: an electron-capture beam. Emphasis is made on its feasibility thanks to the recent discovery of nuclei that decay fast through electron capture, and on the interplay with a betabeam (its closest relative).