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Strange Baryons in the STAR Experiment

机译:奇怪的Baryons在明星实验中

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Preliminary results from the STAR experiment are presented here and complement the studies related to the hyperon production at mid-rapidity in central Au+Au collisions fro the RHIC energy of sNN~(1/2) = 130 GeV. The identification of the triply strange Ω~- via the invariant mass reconstruction of the decay products in the (Λ, K~-) channel allows us to calculate transverse mass spectra for this particle and its anti-particle (Ω-bar)~+. We thus report an inverse slope of ~410 MeV and mid-rapidity yields of 0.32 ± 0.09 (stat.) and 0.34 ± 0.09 (stat.) for the Ω and (Ω-bar)~+ respectively. Furthermore, a study of the (Λ, p, π) and (Λ, Λ) decay channels has been performed in order to search for the predicted H-dibaryon in STAR. Due to the statistics reached during the first year of data taking, it is difficult to draw any conclusion. However we expect it to be possible to measure some limits on its production in the near future.
机译:在此提出了Star实验的初步结果,并补充了与AU + AU碰撞中环中的中快速度的高速生产相关的研究,从SNN〜(1/2)= 130 GEV的RAIR能量。通过(λ,k〜 - )通道中的衰减产品的不变质量重建的识别,允许我们计算该颗粒的横向质谱及其抗粒子(ω-bar)〜+ 。因此,我们报告了ω和(ω-bar)〜+的0.32±0.09(统计值)和0.34±0.09(stat。)分别为0.32±0.09(stat。)的反斜率。此外,已经执行对(λ,p,π)和(λ,λ)衰减通道的研究,以便在星中搜索预测的H-dibaryon。由于在数据的第一年达到的统计数据,很难得出任何结论。但是,我们希望它可以在不久的将来衡量其生产的一些限制。

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