  We study the trapped surface produced by an off-center collision of
light-like, point-sourced shock waves in anti-de Sitter space. We find an
analytic expression for the shape of the trapped surface in the limit where the
energy of the shock waves is large and the impact parameter is not too large.
We use the area of the trapped surface to estimate a lower bound on the entropy
produced in the collision. We compare our results to particle multiplicity
measurements in heavy-ion collisions as interpreted through the Glauber model.
In an attempt to roughly simulate the effects of asymptotic freedom and
confinement in quantum chromodynamics, we also consider the effects of slicing
off parts of anti-de Sitter space.
