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arXiv 0907.4329hep-ph
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QGP中重夸克能量损失的运行耦合常数方法

Energy Loss of Heavy Quarks in a QGP with a Running Coupling Constant Approach

Pol B. Gossiaux, Joerg Aichelin

摘要:

我们表明,有效运行耦合常数,$α_{\rm eff}$,和有效的调节器,$κ\tilde{m}_{D}^2$,我们最近用来计算的能量损失,$\frac{dE}{dx}$,和椭圆流,$v_2$,在一个膨胀的夸克-胶子等离子体等离子体(QGP)的重夸克是兼容的晶格结果和最近先进的分析pQCD计算。

英文摘要:

We show that the effective running coupling constant, $α_{\rm eff}$, and the effective regulator, $κ\tilde{m}_{D}^2$, which we used recently to calculate the energy loss, $\frac{dE}{dx}$, and the elliptic flow, $v_2$, of heavy quarks in an expanding quark gluon plasma plasma (QGP) are compatible with lattice results and with recently advanced analytical pQCD calculation.

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