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arXiv 1207.0984hep-ph
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QCD介质中初态和终态辐射之间的干扰

Interference between initial and final state radiation in a QCD medium

Néstor Armesto, Hao Ma, Mauricio Martinez, Yacine Mehtar-Tani, Carlos A. Salgado

摘要:

我们研究了QCD介质中初态和末态辐射之间的颜色相干图样。我们推导出介质诱导的胶子谱的“渐近”部分子遭受硬散射,随后穿过介质。当入射部分子和出射部分子之间存在有限角度的干涉项时,诱导胶子谱的角分布被修正。研究了介质诱导胶子谱的相干、非相干和软极限。在软极限中,我们提供了一个简单直观的概率图,这可能是蒙特卡罗实现的兴趣。这里研究的组态可能在高能核碰撞中具有唯象的后果。

英文摘要:

We investigate the color coherence pattern between initial and final state radiation in the presence of a QCD medium. We derive the medium-induced gluon spectrum of an "asymptotic" parton which suffers a hard scattering and subsequently crosses the medium. The angular distribution of the induced gluon spectrum is modified when one includes interference terms between the incoming and the outgoing parton at finite angle between them. The coherent, incoherent and soft limits of the medium-induced gluon spectrum are studied. In the soft limit, we provide a simple and intuitive probabilistic picture which could be of interest for Monte Carlo implementations. The configuration studied here may have phenomenological consequences in high energy nuclear collisions.

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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