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arXiv 1005.5461nucl-thhep-phnucl-ex
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超相对论重离子碰撞中的普适流驱动锥形辐射

Universal Flow-Driven Conical Emission in Ultrarelativistic Heavy-Ion Collisions

Barbara Betz, Jorge Noronha, Giorgio Torrieri, Miklos Gyulassy, Dirk H. Rischke

摘要:

在软硬强子关联中观察到的双峰结构通常被解释为超相对论性重离子碰撞中产生的热而稠密的介质与超音速喷流相互作用产生的马赫锥的特征。我们表明,它也可以出现由于平均在许多射流事件在横向扩展的背景。我们发现,射流诱导的远离侧产量不依赖于等离子体中的能量-动量沉积的细节,射流速度,或系统的大小。我们的主张可以通过比较由重味射流引起的软硬相关性与由轻味射流产生的软硬相关性来实验验证。

英文摘要:

The double-peak structure observed in soft-hard hadron correlations is commonly interpreted as a signature for a Mach cone generated by a supersonic jet interacting with the hot and dense medium created in ultrarelativistic heavy-ion collisions. We show that it can also arise due to averaging over many jet events in a transversally expanding background. We find that the jet-induced away-side yield does not depend on the details of the energy-momentum deposition in the plasma, the jet velocity, or the system size. Our claim can be experimentally tested by comparing soft-hard correlations induced by heavy-flavor jets with those generated by light-flavor jets.

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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