The new CJ25 global parton distributions fit

I will discuss the new CTEQ-JLab (CJ) global PDF analysis --called CJ25-- that, for the first time in a global fit, includes the full set of JLab 6 GeV inclusive DIS measurements and the first published JLab 12 GeV data. The analysis focuses particularly on the large-x region, and carefully treats the interplay between higher-twist effects and off-shell nucleon corrections in low-energy data on proton and deuteron targets. I will discuss their effect on both quark and gluon distributions, and outline how upcoming data may help unravel the nuclear and partonic dynamics in light nuclei.