arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1209.4182nucl-thhep-ph
收藏

$\sqrt{s_{\rm{NN}}}$ =200 GeV中心Au+Au碰撞中的反物质产生

Antimatter production in central Au+Au collisions at $\sqrt{s_{\rm{NN}}}$=200 GeV

Gang Chen, Yu-Liang Yan, De-sheng Li, Dai-Mei Zhou, Mei-Juan Wang, Bao-Guo Dong, Ben-Hao Sa

摘要:

利用动态约束相空间聚并模型,研究了在$\sqrt{s_{\rm{NN}}}$ =200 GeV,$|y| <$为1,$p_T<$为5的情况下,由PACIAE模型产生的0-5%最中心Au+Au碰撞的1.134 $\times 10^7$强子末态的轻核(反核)的产生. $\bar{_{\barΛ}^ 3H}$、${_Λ^3 H}$、$^3{\bar{He}}$和$^3{He}$产率和比值的STAR数据与相应的PACIAE结果很好地再现。给出了$\bar{^3{He}}$(${^3{He}}$)和$\bar{_{\barΛ}^3H}$(${_Λ^3H}$)的横动量分布。结果表明,轻核的横动量分布与相应的反核的横动量分布接近。

英文摘要:

We have used the dynamically constrained phase space coalescence model to investigate the production of light nuclei (anti-nuclei) based on the 1.134$\times 10^7$ hadronic final states generated by the PACIAE model for the 0-5% most central Au+Au collisions at $\sqrt{s_{\rm{NN}}}$=200 GeV with $|y| <$1 and $p_T<$5 acceptances. The STAR data of $\bar{_{\barΛ}^ 3H}$, ${_Λ^3 H}$, $^3{\bar{He}}$, and $^3{He}$ yields and ratios are well reproduced by the corresponding PACIAE results. The transverse momentum distribution of $\bar{^3{He}}$ (${^3{He}}$) and $\bar{_{\barΛ}^3H}$ (${_Λ^3H}$) is also given. It turned out that the transverse momentum distribution of light nuclei is close to that of the corresponding anti-nuclei.

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。

↑