Hard probes in isobar collisions as a probe of the neutron skin

We present an estimate of the yield of hard probes expected for collisions of the isobars 96 44 Ru and 96 40 Zr 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 96 40 Zr.This provides an independent opportunity to measure the difference between the neutron skin of 96 44 Ru and 96 40 Zr, which can provide an important constraint on the Equation of State of cold neutron-rich matter.