  State-of-the-art analyses of W+c-jet production at the LHC require precise
predictions. In the present work, we study in detail the impact of off-diagonal
CKM elements up to next-to-next-to leading order in QCD, the influence of
flavored jet algorithms, and the size of electroweak corrections. In addition,
we also investigate phenomenological aspects related to the exact definition of
the process. We find that all these effects can be of the order of several per
cent for both the fiducial cross section and differential distributions. They
are, therefore, very relevant for the interpretation of current and upcoming
measurements.
