The knowledge of charm production asymmetries is an important prerequisite
for many of the possible searches for CP violation in charm. Measurements of
these asymmetries at hadron colliders can also help to improve our
understanding of QCD. These proceedings review existing measurements and
discuss some of the experimental challenges of determining charge asymmetries
at the per-mille level.Comment: To appear in the proceedings of The 6th International Workshop on
Charm Physics (CHARM 2013