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Inferring nuclear structure from heavy isobar collisions using Trajectum
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abstract
Nuclei with equal number of baryons but varying proton number (isobars) have many commonalities, but differ in both electric charge and nuclear structure. Relativistic collisions of such isobars provide unique opportunities to study the variation of the magnetic field, provided the nuclear structure is well understood. In this Letter we simulate collisions using several state-of-the-art parametrizations of the $^{96}_{40}$Zr and $^{96}_{44}$Ru isobars and show that a comparison with the exciting STAR measurement arXiv:2109.00131 of ultrarelativistic collisions can uniquely identify the structure of both isobars. This not only provides an urgently needed understanding of the structure of the Zirconium and Ruthenium isobars, but also paves the way for more detailed studies of nuclear structure using relativistic heavy ion collisions.
Forward citations
Cited by 3 Pith papers
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Benchmarking nuclear matrix elements of $0\nu\beta\beta$ decay with high-energy nuclear collisions
Simulations show that flow observables in ultra-central 150Nd+150Nd collisions have Pearson correlations up to |r|=0.93 with the 0νββ nuclear matrix element, proposing collider data as a benchmark for nuclear theory.
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Nonlinear collective flow reveals the breakdown of quadrupole--hexadecapole scaling in heavy ion collisions
The nonlinear flow coefficient ξ6,222 in simulated U+U collisions separates the four (β2, β4) nuclear topology classes, making the sign of the hexadecapole deformation β4 experimentally accessible.
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Nuclear Physics Confronts Relativistic Collisions Of Isobars
RHIC isobar data are explained by different shapes of 96Ru and 96Zr, with 96Zr showing a large octupole deformation, so nuclear structure uncertainty, not the magnetic field, dominates the observed ratios.
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