We present an estimate of the yield of hard probes expected for collisions of
the isobars 4496βRu and 4096βZr at collision energies reachable
at RHIC and the LHC\@. These yields are proportional to the number of binary
nucleon-nucleon interactions, which is characteristically different due to the
presence of the large neutron skin in 4096βZr. This provides an
independent opportunity to measure the difference between the neutron skin of
4496βRu and 4096βZr, which can provide an important constraint on
the Equation of State of cold neutron-rich matter.Comment: 5 pages, 6 figures and an appendix. Comments are welcom