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arXiv 1202.4579hep-ph
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双射流不对称性对射流淬熄物理的敏感性

On the sensitivity of the dijet asymmetry to the physics of jet quenching

Thorsten Renk

摘要:

在超相对论重离子碰撞中,单喷流的出现是喷流猝灭的最显著特征之一。在实验上,喷流的消失已经被ATLAS和CMS合作根据可观测的双喷流不对称性A_J量化。虽然实验结果最初引起了声称测量的A_J将挑战辐射能量损失范例,系统研究了不同介质演化模式和不同簇射模式下的A_J值,本文提出的介质相互作用表明,A_J的观测性质相当普遍地出现,并且与大类合理模型的特定模型假设无关。这意味着,可观察到的不是对任何特定模型的挑战,而是提出了一个问题,即模型动态与数据不兼容。

英文摘要:

The appearance of monojets is among the most striking signature of jet quenching in the context of ultrarelativistic heavy-ion collisions. Experimentally, the disappearance of jets has been quantified by the ATLAS and CMS collaborations in terms of the dijet asymmetry observable A_J. While the experimental findings initially gave rise to claims that the measured A_J would challenge the radiative energy loss paradigm, the results of a systematic investigation of A_J in different models for the medium evolution and for the shower-medium interaction presented here suggest that the observed properties of A_J arise fairly generically and independent of specific model assumptions for a large class of reasonable models. This would imply that rather than posing a challenge to any particular model, the observable prompts the question what model dynamics is not compatible with the 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。

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