Different coalescence sources of light nucleus production in Au-Au collisions at √sNN = GeV

被引：3

作者：

Wang, Rui-Qin ^{[1
]}

Lv, Ji-Peng ^{[1
]}

Li, Yan-Hao ^{[1
]}

Song, Jun ^{[2
]}

Shao, Feng-Lan ^{[1
]}

机构：

[1] Qufu Normal Univ, Sch Phys & Phys Engn, Qufu 273165, Peoples R China

[2] Jining Univ, Sch Phys Sci & Intelligent Engn, Jining 273155, Peoples R China

来源：

CHINESE PHYSICS C | 2024年 / 48卷 / 05期

关键词：

light nucleus production; the coalescence model; relativistic heavy ion collision; MODEL; FLOW; QCD; STATE; EXPANSION; DEUTERONS; EQUATION; PROBE;

D O I：

10.1088/1674-1137/ad2b56

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study the production of light nuclei in the coalescence mechanism of Au-Au collisions at root s(NN) = GeV midrapidity at GeV. We derive analytic formulas of the momentum distributions of two bodies, three bodies, and four nucleons coalescing into light nuclei and naturally explain the transverse momentum spectra of the deuteron (d), triton (t), helium-3 (He-3), and helium-4 (He-4). We reproduce data on the yield rapidity densities, yield ratios, and averaged transverse momenta of d, t, He-3, and He-4 and provide the proportions of contributions from different coalescence sources for t, He-3, and He-4 in their production. We find that besides nucleon coalescence, nucleon+nucleus coalescence and nucleus+nucleus coalescence may play requisite roles in light nucleus production in Au-Au collisions at root s(NN) = GeV.

引用

页数：20

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