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Production of light (anti)nuclei, (anti)hypertriton, and di-Lambda in central Au plus Au collisions at energies available at the BNL Relativistic Heavy Ion Collider
Xue, L(薛亮); Ma, YG(马余刚); Chen, JH(陈金辉); Zhang, S(张松)
2012
Source PublicationPHYSICAL REVIEW C
ISSN0556-2813
Volume85Issue:6
AbstractA simple coalescence model is employed to investigate the production of light (anti) nuclei and (anti) hypertriton as well as di-Lambda in the most central Au + Au collisions. The invariant yields of He-3((3)(He) over bar), H-3(Lambda)((3)(Lambda)(H) over bar), and He-4((4)(He) over bar) obtained within current framework are found to be consistent with the measurements of the solenoidal tracker at the BNL Relativistic Heavy Ion Collider (STAR) detector. We also investigate the coalescence parameters B-A (A = 2, 3, 4) as a function of transverse momentum for d((d) over bar), He-3((3)(He) over bar), H-3(Lambda)((3)(Lambda)(H) over bar), and He-4((4)(He) over bar), respectively. B-2 for d((d) over bar) and B-3 for He-3((3)(He) over bar) are comparable with the STAR measurement within statistical uncertainties. The p(T) integrated yields for di-Lambda dN(Lambda Lambda)/dy similar to 2.23 x 10(-5), and is not strongly dependent on the parameter employed for the coalescence process. Combining the data points extracted by the PHENIX Collaboration, the coalescence parameters exhibit a strong centrality dependence. An exponential behavior is shown for the differential invariant yields versus baryon number distribution. The production rate reduces by a factor of 1692 (1285) for each additional antinucleon (nucleon) added to antinuclei (nuclei), and the production rate of (6)(Li) over bar is about 10(-16) which is consistent with results extracted by the STAR experiment. The relative abundance of light anti(nuclei) and (anti) hypertriton are explored with particle ratios, and agree with experimental data as well as thermal model predictions.
Language英语
Funding Project应物所项目组
WOS IDWOS:000305539600001
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13260
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Xue, L,Ma, YG,Chen, JH,et al. Production of light (anti)nuclei, (anti)hypertriton, and di-Lambda in central Au plus Au collisions at energies available at the BNL Relativistic Heavy Ion Collider[J]. PHYSICAL REVIEW C,2012,85(6).
APA Xue, L,Ma, YG,Chen, JH,&Zhang, S.(2012).Production of light (anti)nuclei, (anti)hypertriton, and di-Lambda in central Au plus Au collisions at energies available at the BNL Relativistic Heavy Ion Collider.PHYSICAL REVIEW C,85(6).
MLA Xue, L,et al."Production of light (anti)nuclei, (anti)hypertriton, and di-Lambda in central Au plus Au collisions at energies available at the BNL Relativistic Heavy Ion Collider".PHYSICAL REVIEW C 85.6(2012).
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