Speaker
Description
we explore the Bjorken $x$ weighted EEC in DIS from the TFR to CFR. In both regions, a factorization theorem can be derived with SCET, based on which the logarithms can be resummed to all orders in $\alpha_s$. The singular distributions can be derived from the factorized formula, which are compared against the full fixed-order QCD calculations up to NLO. Additionally, we present the resummation results up to NLL in the TFR and N$^3$LL in the TMD region. In the extremely small angle limit, the free hadron gas model is introduced to investigate the non-perturbative distribution. We compared our predictions to partonic $\text{ PYTHIA}$ simulations. Between the hadron gas phase region and the perturbative resummation region, a transition phase is observed. The non-perturbative and hadronization effects in the TMD region were investigated by considering non-perturbative form factors extracted from the semi-inclusive hadron production in DIS. Incorporating these non-perturbative models, we also presented the comparison of our predictions to $\text{PYTHIA}$ simulations.
