We investigate the binding energy parameters that should be used in modeling
electron and neutrino scattering from nucleons bound in a nucleus within the
framework of the impulse approximation. We discuss the relation between binding
energy, missing energy, removal energy (ϵ), spectral functions and
shell model energy levels and extract updated removal energy parameters from
ee′p spectral function data. We address the difference in parameters
for scattering from bound protons and neutrons. We also use inclusive e-A data
to extract an empirical parameter UFSI​((q​3​+k)2) to account
for the interaction of final state nucleons (FSI) with the optical potential of
the nucleus. Similarly we use Veff​ to account for the Coulomb potential of
the nucleus. With three parameters ϵ, UFSI​((q​3​+k)2)
and Veff​ we can describe the energy of final state electrons for all
available electron QE scattering data. The use of the updated parameters in
neutrino Monte Carlo generators reduces the systematic uncertainty in the
combined removal energy (with FSI corrections) from ± 20 MeV to ± 5
MeV.Comment: 21 pages, 22 Figures, 11 Tables, Accepted for publication in Eur.
Phys. J. C. 2019, all fits to Optical potential redone with respect to
(q3+k)^