l - th / 9 51 20 21 v 1 1 4 D ec 1 99 5 Inelastic nucleon contributions in ( e , e ′ ) nuclear response functions
نویسندگان
چکیده
We estimate the contribution of inelastic nucleon excitations to the (e, e ′) inclusive cross section in the CEBAF kinematic range. Calculations are based upon parameter-izations of the nucleon structure functions measured at SLAC. Nuclear binding effects are included in a vector-scalar field theory, and are assumed have a minimal effect on the nucleon excitation spectrum. We find that for q < ∼ 1 GeV the elastic and inelastic nucleon contributions to the nuclear response functions are comparable, and can be separated, but with roughly a factor of two uncertainty in the latter from the extrapo-lation from data. In contrast, for q > ∼ 2 GeV this uncertainty is greatly reduced but the elastic nucleon contribution is heavily dominated by the inelastic nucleon background.
منابع مشابه
l - th / 0 21 20 31 v 1 6 D ec 2 00 2 Preprint RM 3 - TH / 02 - 17 Proton and neutron polarized structure functions from low to high Q 2 a
Phenomenological parameterizations of proton and neutron polarized structure functions , g p 1 and g n 1 , are developed for x ∼ > 0.02 using deep inelastic data up to ∼ 50 (GeV /c) 2 as well as available experimental results on photo-and electro-production of nucleon resonances. The generalized Drell-Hearn-Gerasimov sum rules are predicted from low to high values of Q 2 and compared with proto...
متن کاملar X iv : n uc l - ex / 9 91 20 02 v 1 2 D ec 1 99 9 Level density and γ strength function in 162 Dy from inelastic 3 He scattering
Complementary measurements have been performed for the level density and γ strength function in 162 Dy using inelastic 3 He scattering. Comparing these results to previous measurements using the 163 Dy(3 He,α) reaction , reveals that the measured quantities above 1.5 MeV do not depend significantly on the nuclear reaction chosen.
متن کاملar X iv : n uc l - th / 9 81 20 78 v 1 3 1 D ec 1 99 8 Nuclear y and x scaling ⋆
The exact expression of the nuclear structure function describing inclusive lepton scattering off nuclei is recalled, and the basic approximations leading to nonrelativistic and relativistic nuclear y and x scaling, are illustrated. The general and systematic features of y-scaling structure functions are pointed out, and a recently proposed novel approach to y-scaling, based on a global scaling...
متن کاملar X iv : n uc l - th / 9 31 20 21 v 1 2 8 D ec 1 99 3 Meson phase space density from interferometry
X iv :n uc lth /9 31 20 21 v1 2 8 D ec 1 99 3 Meson phase space density from interferometry George F. Bertsch Dept. of Physics and Institute for Nuclear Theory, FM-15 University of Washington Seattle, WA 98195 Abstract The interferometric analysis of meson correlations provides a measure of the average phase space density of the mesons in the final state. This quantity is a useful indicator of ...
متن کاملar X iv : n uc l - th / 9 80 90 90 v 2 1 6 M ar 1 99 9 Channel Coupling in A ( ~ e , e ′ ~ N ) B Reactions
The sensitivity of momentum distributions, recoil polarization observables, and response functions for nucleon knockout by polarized electron scattering to channel coupling in final-state interactions is investigated using a model in which both the distorting and the coupling potentials are constructed by folding density-dependent nucleon-nucleon effective interactions with nuclear transition d...
متن کامل