Speaker
Description
We report the results of a new global QCD analysis including deep-inelastic scattering (DIS) data off $^1$H, $^2$H, $^3$H, and $^3$He targets. Nuclear corrections are treated in terms of a nuclear convolution approach with off-shell bound nucleons. The off-shell corrections responsible for the modification of the structure functions (SFs) of bound nucleons are constrained in a global fit along with the proton parton distributions (PDFs) and the higher-twist (HT) terms. In particular, we investigate the proton-neutron difference for these corrections. We also discuss our predictions for the SF ratio $F_2^n/F_2^p$ and the corresponding PDF ratio $d/u$ in the proton, as well as their correlations with the underlying treatment of the HT terms and of the off-shell corrections.
References
arXiv:2211.09514 [hep-ph]
| Submitted on behalf of a Collaboration? | No |
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