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arXiv · 2609.29237

Measuring short-range correlations using relativistic heavy-ion collisions

Lu-Meng Liu·Jun Xu·Xu-Guang Huang
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Abstract

We propose a novel method to measure the strength and isospin dependence of short-range correlations (SRCs) in nuclei with their collisions at relativistic energies. Since nucleons in the high-momentum tail (HMT) induced by SRCs have large transverse velocities, we find that measuring the yield ratio of free spectator neutrons at large to small transverse distances detected by Zero-Degree Calorimeter (ZDC) array may probe the fraction of nucleons in the HMT. In addition, measuring the yield ratio of ZDC neutrons in central $^{96}$Zr+$^{96}$Zr to $^{96}$Ru+$^{96}$Ru collisions at large transverse distances may probe the isospin dependence of the HMT and SRCs. Compared to traditional scattering experiments, our study illustrates that relativistic heavy-ion collisions may serve as an alternative way of measuring SRCs in colliding nuclei with less final-state interactions.

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Lu-Meng Liu, Jun Xu, Xu-Guang Huang. 2026-09-24. Measuring short-range correlations using relativistic heavy-ion collisions. https://arxiv.org/abs/2609.29237

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