2024/10/28 by S. Alekhin, S. A. Kulagin, Alekhin, S. I. +3
Physics and Astronomy · #Crystallography and Radiation Phenomena #Nuclear physics research studies #Radioactive Decay and Measurement Techniques
paper · pdf · doi:10.48550/arxiv.2410.21472
We discuss results from our global QCD analyses including nuclear data off deuterium from various measurements, as well as off \htri and \hetri targets from the \mara experiment. We simultaneously determine the parton distribution functions of the proton, the higher-twist terms, and the nucleon off-shell correction functions responsible for the modifications of the partonic structure in bound protons and neutrons. In particular, we study the neutron-proton asymmetry of the off-shell correction and its interplay with the treatment of the higher-twist terms. We observe that the data on the \hetri/\htri, \hetri/\hdeu, and \htri/\hdeu cross section ratio are in good agreement with the predictions based on a single isoscalar off-shell function. We provide the corresponding predictions on the ratio F2n/F2p, on the d and u quark distributions in the proton and in the \htri and \hetri nuclei, as well as for future measurements of the EMC effect with parity-violating Deep Inelastic Scattering (DIS).