Thursday, September 20, 2012

1209.4182 (Gang Chen et al.)

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

Gang Chen, Yu-Liang Yan, De-sheng Li, Dai-Mei Zhou, Mei-Juan Wang, Bao-Guo Dong, Ben-Hao Sa
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 $\bar{_{\bar\Lambda}^ 3H}$, ${_{\Lambda}^3 H}$, $^3{\bar{He}}$, 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 $\bar{_{\bar\Lambda}^3H}$ (${_{\Lambda}^3H}$) is also given. It turned out that the transverse momentum distribution of light nuclei is close to that of the corresponding anti-nuclei.
View original: http://arxiv.org/abs/1209.4182

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