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

Abstract

We present an estimate of the yield of hard probes expected for collisions of the isobars 4496^{96}_{44}Ru and 4096^{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 4096^{96}_{40}Zr. This provides an independent opportunity to measure the difference between the neutron skin of 4496^{96}_{44}Ru and 4096^{96}_{40}Zr, 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

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