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arXiv 1507.02091hep-ph
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色重联对强子味观测量的影响

Effects of Colour Reconnection on Hadron Flavour Observables

Christian Bierlich, Jesper Roy Christiansen

摘要:

我们提出了两个最近开发的颜色重联模型,新的颜色重联模型在PYTHIA和DIPSY绳强子化模型之间的比较。具体来说,我们调查的比率确定强子产量作为一个功能的最终状态的活动,作为衡量的收费的多重性。由于这两个模型都对终态活动有重要的依赖性,因此上述观测值可以作为测试这些模型效果的极好探针。这两个模型都显示出明显的重子增强与增加的多重性,而只有DIPSY绳模型导致奇异增强。流动样的图案,以前发现连接到颜色重联模型,调查的新模型。随着终态活性的增加,只有PYTHIA显示出$Λ/K$比率的$p_\perp$依赖性增强,增强在中间$p_\perp$区域最大。

英文摘要:

We present a comparison between two recently developed colour reconnection models, the new colour reconnection model in PYTHIA and the DIPSY rope hadronization model. Specifically we investigate ratios of identified hadron yields as a function of the final-state activity, as measured by the charged multiplicity. Since both models have a nontrivial dependence on the final-state activity, the above observables serve as excellent probes to test the effect of these models. Both models show a clear baryon enhancement with increasing multiplicity, while only the DIPSY rope model leads to a strangeness enhancement. Flow-like patterns, previously found to be connected to colour reconnection models, are investigated for the new models. Only PYTHIA shows a $p_\perp$-dependent enhancement of the $Λ/K$ ratio as the final-state activity increases, with the enhancement being largest in the mid-$p_\perp$ region.

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。

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