Speaker
Description
We present a comparative analysis of Mellin moments of parton distribution functions (PDFs) using two parametrization strategies, viz. exponential-smooth polynomial weights and generalized polynomial expansions. Both approaches extend beyond the conventional constant-term model, introducing flexibility in modeling quark and gluon dynamics across the momentum fraction domain. Mellin moments are systematically computed for two parameter sets and analyzed across several indices. Together, these complementary parametrizations enrich the accuracy and stability of Mellin moment evaluations, offering new perspectives for Quantum Chromodynamics (QCD) phenomenology. This comparative framework provides a basis for optimizing functional forms in global parton distribution analyses.
