  This study explores fully leptonic WZ and WW production at the LHC within the
SMEFT framework at NLO in QCD, focusing on both CP-even and CP-odd
triple-gauge-coupling dimension-six operators. We investigate the off-shell
processes, contrasting our findings in inclusive setups with those in the
presence of realistic fiducial selections. Alongside the conventional kinematic
observables, we examine polarisation-sensitive observables and angular
coefficients. Moreover, we assess potential SMEFT effects on asymmetry
observables. Through a sensitivity analysis, we identify critical LHC
observables that are particularly sensitive to SMEFT-induced modifications,
thereby shedding light on potential avenues for new-physics searches in diboson
production at the LHC.
