arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1104.4162hep-phnucl-th
收藏

从RHIC到LHC能重离子碰撞中的喷流能量损失

Jet energy loss in heavy ion collisions from RHIC to LHC energies

Peter Levai

摘要:

在重离子碰撞中,由于感生喷注能量损失而导致的强子产生的抑制是最被广泛接受和理解的现象之一,它表明了色退禁闭物质的形成,其中包括夸克、反夸克和胶子。这种现象已经在RHIC能量中看到,现在第一次LHC结果显示出非常相似的效果。事实上,在200 AGeV和2.76 ATEV处的抑制是如此接近,以至于研究这样的抑制图案是否存在是有趣的。我们使用Gyulassy-Levai-Vitev描述的诱导喷流能量损失结合不同的核遮蔽函数和描述的实验数据。我们声称,一个一致的图片,可以得到所产生的热物质与弱核阴影。核遮蔽和喷流能量损失之间的相互作用在理解实验数据中起着至关重要的作用。

英文摘要:

The suppression of hadron production originated from the induced jet energy loss is one of the most accepted and well understood phenomena in heavy ion collisions, which indicates the formation of color deconfined matter consists of quarks, antiquarks and gluons. This phenomena has been seen at RHIC energies and now the first LHC results display a very similar effect. In fact, the suppression is so close to each other at 200 AGeV and 2.76 ATeV, that it is interesting to investigate if such a suppression pattern can exist at all. We use the Gyulassy-Levai-Vitev description of induced jet energy loss combined with different nuclear shadowing functions and describe the experimental data. We claim that a consistent picture can be obtained for the produced hot matter with a weak nuclear shadowing. The interplay between nuclear shadowing and jet energy loss playes a crucial role in the understanding of the experimental data.

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。

↑