Particle production in ultrarelativistic heavy ion collisions depends on the details of the nucleon density distributions in the colliding nuclei. We demonstrate that the charged hadron multiplicity distributions in isobaric collisions at ultrarelativistic energies provide a novel approach to determine the poorly known neutron density distributions and thus the neutron skin thickness in finite nuclei, which can in turn put stringent constraints on the nuclear symmetry energy.

中文翻译：

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用超相对论等压碰撞探测中子皮肤

超相对论性重离子碰撞中的颗粒产生取决于碰撞核中核子密度分布的细节。我们证明了超相对论能量在等压碰撞中的带电强子多重分布提供了一种新颖的方法来确定鲜为人知的中子密度分布，从而确定有限原子核中的中子皮厚度，这反过来又可以对核对称能施加严格的约束。