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arXiv 2212.04777nucl-exhep-ex
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在 $\sqrt{s_{\rm NN}} = 8.16$ TeV 的 p–Pb 碰撞中测量（反）原子核的产生

Measurement of the production of (anti)nuclei in p-Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV

ALICE Collaboration

备注：
27 pages, 4 captioned figures, 3 tables, authors from page 22, published version, figures at http://alice-publications.web.cern.ch/node/8796
发表信息：
Phys. Lett. B 846 (2023) 137795
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AI总结：

研究在 8.16 TeV p–Pb 碰撞中测量轻（反）原子核产生，通过并合参数和产额比表明并合模型优于正则统计强子化模型。

摘要：

本文给出了在每核子–核子对质心系能量 $\sqrt{s_{\rm NN}} = 8.16$ TeV 的 p–Pb 碰撞中，于快度范围 $-1<y<0$ 内对（反）质子、（反）氘核和（反）$^3$He 产生的测量，结果表示为横动量和事件多重数的函数。作为每核子横动量及平均带电粒子多重数密度的函数而测得的并合参数 $B_2$ 和 $B_3$，证实了不同碰撞系统和能量下从低多重数到高多重数的平滑演化。文中还报告了（反）氘核与（反）$^3$He 产额相对于（反）质子产额的比值随平均带电粒子多重数密度的变化。将这些结果与统计强子化模型和并合模型针对不同碰撞系统及质心系能量的预言进行比较，结果表明，相对于正则统计模型，并合描述更适合氘核–质子产额比。

英文摘要：

Measurements of (anti)proton, (anti)deuteron, and (anti)$^3$He production in the rapidity range $-1<y< 0$ as a function of the transverse momentum and event multiplicity in p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair $\sqrt{s_{\rm NN}} = 8.16$ TeV are presented. The coalescence parameters $B_2$ and $B_3$, measured as a function of the transverse momentum per nucleon and of the mean charged-particle multiplicity density, confirm a smooth evolution from low to high multiplicity across different collision systems and energies. The ratios between (anti)deuteron and (anti)$^3$He yields and those of (anti)protons are also reported as a function of the mean charged-particle multiplicity density. A comparison with the predictions of the statistical hadronization and coalescence models for different collision systems and center-of-mass energies favors the coalescence description for the deuteron-to-proton yield ratio with respect to the canonical statistical model.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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