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arXiv 0802.0343hep-ph
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Mueller-Navelet喷流的几何标度

Geometric Scaling in Mueller-Navelet Jets

E. Iancu, M. S. Kugeratski, D. N. Triantafyllopoulos

摘要:

我们认为,在LHC的Mueller-Navelet喷流的生产代表了一个方便的环境,研究胶子饱和和高能散射的存在下的么正修正。我们表明,在适当的范围内的横向动量的射流,部分子过程的截面应表现出几何标度。我们指出,在运行耦合的存在下,用于产生硬射流的截面不能完全用微扰理论计算,即使在考虑饱和效应之后也不能:非微扰物理影响截面的整体归一化,但也不影响其几何标度行为。

英文摘要:

We argue that the production of Mueller-Navelet jets at the LHC represents a convenient environment to study gluon saturation and high energy scattering in the presence of unitarity corrections. We show that, in a suitable range of transverse momenta for the produced jets, the cross section for the partonic subprocess should exhibit geometric scaling. We point out that, in the presence of a running coupling, the cross section for producing hard jets cannot be fully computed in perturbation theory, not even after taking into account the saturation effects: the non-perturbative physics affects the overall normalization of the cross section, but not also its geometric scaling behavior.

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