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We present a discussion of models of nuclear effects used to describe aninclusive electron-nucleus scattering in the quasielastic (QE) peak region,aiming to compare them and draw conclusion of their reliability when applied inneutrino-nucleus interactions. A basic motivation is to reduce systematicerrors in neutrino oscillation experiments. We concentrate on the neutrinoenergy profile of the T2K experiment, which provides us a region of thegreatest importance in terms of the highest contribution to the charge-currentquasielastic (CCQE) cross section. We choose only electron-nucleus data thatoverlaps with this region. In order to clearify the analysis, we split the datasets into three groups and draw conclusion separately from each one of them.  We selected six models for this comparison: Benhar's spectral function withand without final state interaction (Benhar's SF+FSI), Valencia spectralfunction (Valencia SF), for higher energy transfer only with the hole spectralfunction; GiBUU and also the local and global Fermi gas models. The latter twoare included as a benchmark to quantify the effect of various nuclear effects.All the six models are often used in neutrino scattering studies. A shorttheoretical description of each model is given. Although in the selected datasets the QE mechanism dominates, we also briefly discuss a possible impact of$2p2h$ and $\Delta$ contributions.

Accuracy of the lepton-nucleus scattering models in the quasielastic region