TY - GEN AU - Cacciari,Matteo AU - Mangano,Michelangelo L AU - Nason,Paolo TI - Gluon PDF constraints from the ratio of forward heavy-quark production at the LHC at [Formula: see text] and 13 TeV SN - 1434-6044 PY - 0000/// PB - The European physical journal. C, Particles and fields N1 - Publication Type: Journal Article UR - https://doi.org/10.1140/epjc/s10052-015-3814-x ER -