Neutron observables from inclusive lepton scattering on nuclei

Abstract

We analyze new JLAB data for inclusive electron scattering on various targets. Computed and measured total inclusive cross sections in the range 0.3 x 0.95 show on a logarithmic scale reasonable agreement for all targets. However, closer inspection of the Quasi-Elastic components bares serious discrepancies. EMC ratios with conceivably smaller systematic errors fare the same.As a consequence the new data do not enable the extraction of the magnetic form factor (FF)G n M and the Structure Function (SFs) F n 2 of the neutron, although the application of exactly the same analysis to older data had been successful. We incorporate in the above analysis older CLAS collaboration data on F D 2 . Removing some scattered points from those, it appears possible to obtain the requested neutron information. We compare our results with others from alternative sources. Special attention is paid to the A = 3 iso-doublet cross sections and EMC ratios. Present data exist only for 3 He, but the available input in combination with charge symmetry enables computations for 3 H. Their average is the computed iso-scalar part and is compared with the empirical modification of 3 He EMC ratios towards a fictitious A = 3 iso-singlet.