  After the discovery of a scalar resonance, resembling the Higgs boson, its
couplings have been extensively studied via the measurement of various
production and decay channels on the invariant mass peak. Recently, it has been
suggested the possibility to use off-shell measurements: in particular, CMS has
published results based on the high- invariant mass cross section of the
process $gg \to ZZ$, which contains the contribution of the Higgs. While this
measurement has been interpreted as a constraint on the Higgs width after very
specific assumptions are taken on the Higgs couplings, in this letter we show
that a much more model-independent interpretation is possible.
