Quasielastic electron- and neutrino-nucleus scattering in a continuum random phase approximation approach

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We present a continuum random phase approximation approach to study electron- and neutrino-nucleus scattering cross sections, in the kinematic region where quasielastic scattering is the dominant process. We show the validity of the formalism by confronting inclusive (e,e') cross sections with the available data. We calculate flux-folded cross sections for charged-current quasielastic antineutrino scattering off ¹²C and compare them with the MiniBooNE cross-section measurements. We pay special emphasis to the contribution of low-energy nuclear excitations in the signal of accelerator-based neutrino-oscillation experiments.