Simultaneous Monte Carlo analysis of parton densities and fragmentation functions

We perform a comprehensive new Monte Carlo analysis of high-energy lepton-lepton, lepton-hadron and hadron-hadron scattering data to simultaneously determine parton distribution functions (PDFs) in the proton hadron fragmentation (FFs). The includes all available semi-inclusive deep-inelastic single-inclusive ${e}^{+}{e}^{\ensuremath{-}}$ annihilation for pions, kaons unidentified charged hadrons, which allows flavor dependence be constrained. Employing multistep fitting strategy more flexible parametrizations both PDFs FFs, we assess impact different datasets on sea quark densities confirm previously observed suppression strange distribution. fit, refer as ``JAM20-SIDIS,'' will allow improved studies universality correlation functions, including transverse momentum dependent (TMD) distributions, across wide variety process, matching collinear TMD factorization descriptions.