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arXiv 1209.0198nucl-thhep-ph
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有限磁质量动力学QCD介质中的重味抑制

Heavy flavor suppression in a dynamical QCD medium with finite magnetic mass

Magdalena Djordjevic

摘要:

在超相对论性重离子碰撞中对喷流猝灭的可靠预测需要精确计算辐射能量损失。虽然所有可用的能量损失计算都假设磁质量为零,但根据单圈微扰计算,不同的非微扰方法报告了RHIC和LHC的非零磁质量。我们推广了动力学能量损失形式主义,始终包括存在非零磁屏蔽的可能性。我们表明,这种推广表明一个基本的约束,电磁质量比,这似乎是支持格点量子色动力学模拟。喷流抑制模式,从这个新开发的概括,得到合理的协议与现有的RHIC和LHC测量。

英文摘要:

Reliable predictions for jet quenching in ultra-relativistic heavy ion collisions require accurate computation of radiative energy loss. While all available energy loss calculations assume zero magnetic mass, in accordance with the one-loop perturbative calculations, different non-perturbative approaches report a non-zero magnetic mass at RHIC and LHC. We generalized the dynamical energy loss formalism, to consistently include a possibility for existence of non-zero magnetic screening. We show that this generalization indicates a fundamental constraint on electric to magnetic mass ratio, which appears to be supported by lattice QCD simulations. Jet suppression patterns, obtained from this newly developed generalization, show reasonable agreement with the available RHIC and LHC measurements.

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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