Ridge from the BFKL evolution and beyond
Ridge from the BFKL evolution and beyond
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DOI：
10.1103/physrevd.84.034031
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发表时间：
2011-05
影响因子：
5
通讯作者：
E. Levin;A. Rezaeian
中科院分区：
文献类型：
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作者：
E. Levin;A. Rezaeian
我们表明，两个BFKL部分子簇射产生的带电-强子对之间的长程快度关联产生了相当大的方位角关联。这些关联没有1/N_c抑制。讨论了胶子饱和对这些关联的影响，并指出了它的重要性。我们发现，从BFKL到饱和区，出现了明显的脊状结构。结果表明，高能质子-质子和核-核碰撞中的脊状结构具有相同的起源，其主要特征可以通过初始态效应来理解。尽管在后一种情况下，最终状态相互作用的影响可能是不可忽略的。
We show that the long-range rapidity correlations between the produced charged-hadron pairs from two BFKL parton showers generate considerable azimuthal angle correlations. These correlations have no 1/N_c suppression. The effect of gluon saturation on these correlations are discussed and we show that it is important. We show that a pronounced ridge-like structure emerges by going from the BFKL to the saturation region. We show that the ridge structure at high-energy proton-proton and nucleus-nucleus collisions has the same origin and its main feature can be understood due to initial-state effects. Although the effects of final-state interactions in the latter case can be non-negligible.