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arXiv 0907.3898hep-ph
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热夸克-胶子等离子体中喷注能量损失和高$p_T$光子产生

Jet energy loss and high $p_T$ photon production in hot quark-gluon plasma

G. -Y. Qin, C. Gale, S. Jeon, G. D. Moore, J. Ruppert

摘要:

在RHIC能区研究了高横动量下的喷注猝灭和光子产生,以及喷注和光子之间的关联。硬部分子穿越热QGP的能量损失的AMY形式主义的评估,始终考虑到诱导胶子发射和弹性碰撞。高$p_T$光子的生产在金+金碰撞计算,纳入一套完整的光子生产渠道。将所有这些成分与热介质的(3+1)维理想相对论流体动力学描述放在一起,我们实现了对当前实验数据的良好描述。我们的研究结果表明,硬喷流和软介质之间的相互作用是重要的喷流猝灭,光子产生,光子-强子的相关性在相对论性核碰撞的完整理解。

英文摘要:

Jet-quenching and photon production at high transverse momentum are studied at RHIC energies, together with the correlation between jets and photons. The energy loss of hard partons traversing the hot QGP is evaluated in the AMY formalism, consistently taking into account both induced gluon emission and elastic collisions. The production of high $p_T$ photons in Au+Au collisions is calculated, incorporating a complete set of photon-production channels. Putting all these ingredients together with a (3+1)-dimensional ideal relativistic hydrodynamical description of the thermal medium, we achieve a good description of the current experimental data. Our results illustrate that the interaction between hard jets and the soft medium is important for a complete understanding of jet quenching, photon production, and photon-hadron correlations in relativistic 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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