  The TOTEM collaboration at the CERN LHC has measured the differential
cross-section of elastic proton-proton scattering at $\sqrt{s} = 8\ {\rm TeV}$
in the squared four-momentum transfer range $0.2\ {\rm GeV^{2}} < |t| < 1.9\
{\rm GeV^{2}}$. This interval includes the structure with a diffractive minimum
("dip") and a secondary maximum ("bump") that has also been observed at all
other LHC energies, where measurements were made. A detailed characterisation
of this structure for $\sqrt{s} = 8\ {\rm TeV}$ yields the positions, $|t|_{\rm
dip} = (0.521 \pm 0.007)\ {\rm GeV^2}$ and $|t|_{\rm bump} = (0.695 \pm 0.026)\
{\rm GeV^2}$, as well as the cross-section values, ${{\rm d}\sigma/{\rm d}
t}_{\rm dip} = (15.1 \pm 2.5)\ {\rm{\mu b/GeV^2}}$ and ${{\rm d}\sigma/{\rm d}
t}_{\rm bump} = (29.7 \pm 1.8)\ {\rm{\mu b/GeV^2}}$, for the dip and the bump,
respectively.
