  We study the potential of fully-differential measurements of high-energy
dilepton cross-sections at the LHC to probe heavy new physics encapsulated in
dimension-6 interaction operators. The assessment is performed in the
seven-dimensional parameter space of operators that induce energy-growing
corrections to the Standard Model partonic cross-sections at the interference
level, and in the two-dimensional subspace associated with the W and Y
parameters. A considerable sensitivity improvement is found relative to
single-differential measurements, owing to the possibility of probing at the
interference level more directions in the seven-dimensional parameter space.
The reduction of parton distribution function uncertainties in the
fully-differential fit is also found to play a significant role. The results
are interpreted in the minimal Z' new-physics model, providing a concrete
illustration of the advantages of the fully-differential analysis. We find that
high-energy dilepton measurements can extend the Z' exclusion and discovery
potential well beyond the reach of direct searches in a large region of the
parameter space.

High Energy Physics - Phenomenology;High Energy Physics - Experiment