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arXiv 1206.5757hep-ph
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高能可因子化胶子密度非线性方程的重和及其包含相干性的推广

Resummation in nonlinear equation for high energy factorizable gluon density and its extension to include coherence

Krzysztof Kutak

摘要:

基于即将在大型强子对撞机上进行的p-Pb实验需要知道胶子密度在$p_t$范围内的饱和度和过程,我们研究了高能QCD因式分解的基本动量空间演化方程。这些方程的解可以用来形成一组胶子密度,以计算广义高能因子分解中的观测量。此外,为了提供一个框架的预测排他性的最终状态的p-Pb散射与高$p_t$,我们重写了方程的高能量可因子化胶子密度的图解形式,类似于已经做了\cite{Kutak:2011fu}的BK方程。然后,扩展到帐户的颜色相干性的图解方程。这为胶子密度的演化引入了一个外部尺度,因此使它适用于末态的研究。

英文摘要:

Motivated by forthcoming p-Pb experiments at Large Hadron Collider which require both knowledge of gluon densities accounting for saturation and for processes at a wide range of $p_t$ we study basic momentum space evolution equations of high energy QCD factorization. Solutions of those equations might be used to form a set of gluon densities to calculate observables in generalized high energy factorization. Moreover in order to provide a framework for predictions for exclusive final states in p-Pb scattering with high $p_t$ we rewrite the equation for the high energy factorizable gluon density in a resummed form, similarly to what has been done in \cite{Kutak:2011fu} for the BK equation. The resummed equation is then extended to account for colour coherence. This introduces an external scale to the evolution of the gluon density, and therefore makes it applicable in studies of final states.

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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