  We present a systematic investigation of jet production at hadron colliders
from a phenomenological point of view, with the dual aim of providing a
validation of theoretical calculations and guidance to future determinations of
parton distributions (PDFs). We account for all available inclusive jet and
dijet production measurements from ATLAS and CMS at 7 and 8 TeV by including
them in a global PDF determination, and comparing to theoretical predictions at
NNLO QCD supplemented by electroweak (EW) corrections. We assess the
compatibility of the PDFs, specifically the gluon, obtained before and after
inclusion of the jet data. We compare the single-inclusive jet and dijet
observables in terms of perturbative behaviour upon inclusion of QCD and EW
corrections, impact on the PDFs, and global fit quality. In the
single-inclusive case, we also investigate the role played by different scale
choices and the stability of the results upon changes in modelling of the
correlated experimental systematics.
