  We predict a nonlinear Hall effect in certain Weyl semimetals with broken
inversion symmetry. When the energy dispersions about pairs of Weyl nodes are
skewed -- the Weyl cones are "tilted" -- the concerted actions of the anomalous
velocity and the chiral anomaly give rise to the nonlinear Hall effect. This
Hall conductivity is linear in both electric and magnetic fields, and depends
critically on the tilting of the Weyl cones. We also show that this effect does
not rely on a finite Berry curvature dipole, in contrast to the intrinsic
quantum nonlinear Hall effect that was recently observed in type-II Weyl
semimetals.
