发表机构
ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung; Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University; School of Physics and Astronomy, University of Birmingham（极端物质研究所 EMMI，GSI 重离子研究中心; 粒子物理研究所及夸克与轻子物理教育部重点实验室，华中师范大学; 伯明翰大学物理与天文学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究检验了统计强子化模型中考虑核尺寸的修正，发现该修正无法自洽描述ALICE实验数据，而无修正模型更优，支持核态源于紧凑多夸克构型的观点。
AI 中文摘要
我们研究了对统计强子化模型（SHM）的一种扩展，该扩展考虑了（超）原子核的尺寸。核波函数的空间范围相对于火球体积被用来计算一个尺寸修正，该修正描述了在强子化时相对于（超）原子核的点状处理的抑制。对于几种轻核（氘核，${}^{3}\mathrm{H}$，${}^{3}\mathrm{He}$）以及超核${}^{3}_{\Lambda}\mathrm{H}$，我们将在ALICE实验中pp、p-Pb和Pb-Pb碰撞中的产额测量与SHM产额预测的尺寸修正效应进行了比较。实验数据表明，这种基于在化学冻结时应用末态波函数的尺寸修正，并不能对核和强子碰撞中的（超）原子核产生给出自洽的描述。相比之下，没有核尺寸修正的SHM对数据的描述明显更好。这一结果进一步支持了这样的解释：这些核态是由初始紧凑的（多夸克）构型形成的，在强子化后膨胀到其末态波函数。
英文摘要
We investigate an extension of the statistical hadronization model (SHM) that takes (hyper)nucleus sizes into account. The spatial extent of nuclear wave functions relative to the fireball volume is used to calculate a size correction, which describes the suppression with respect to a point-like treatment of the (hyper)nucleus at hadronization. For several species of light nuclei (d, ${}^{3}\mathrm{H}$, ${}^{3}\mathrm{He}$) and for the hypernucleus ${}^{3}_Λ\mathrm{H}$, the predicted effects of the size correction on SHM yields are compared to yield measurements in pp, p-Pb, and Pb-Pb collisions in the ALICE experiment. The experimental data suggest that this size correction, based on applying final-state wave functions at chemical freeze-out, does not give a consistent description of (hyper)nucleus production in nuclear and hadronic collisions. By contrast, the SHM without a nuclear-size correction provides a substantially better description of the data. This result lends further support to the interpretation that such nuclear states are formed from initially compact (multi-quark) configurations which after hadronization expand to their final-state wave functions.
Comments8 pages, 7 figures
