Experimental Investigation of low Q² quasielastic electron scattering on carbon

Reliable modeling of quasielastic (QE) lepton scattering on nuclei is of great interest to neutrino oscillations experiments, especially at low values  of the  3-momentum transfer  q.. We report on a phenomenological analysis of the world's QE electron scattering data on Carbon within the framework of the  superscaling model (including Pauli blocking).  We find that at low values of q there is extra suppression of the QE cross section beyond the expected suppression from Pauli blocking.  The total suppression  is larger than the  minimum suppression predicted by the Coulomb Sum Rule.