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arXiv 1504.08233hep-ph
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LHC的Mueller-Navelet射流:BFKL与高能DGLAP

Mueller-Navelet jets at LHC: BFKL versus high-energy DGLAP

Francesco Giovanni Celiberto, Dmitry Yu. Ivanov, Beatrice Murdaca, Alessandro Papa

摘要:

在LHC上产生的被大快度间隙隔开的前向喷流,即所谓的Mueller-Navelet喷流,是高能极限微扰QCD的基本试验场。几个分析已经提供了证据的兼容性的理论预测,基于共线因式分解和BFKL重申的能量谱在下一个领先的近似,与CMS实验数据在7 TeV的质心能量。然而,如果同样的数据也可以描述固定阶微扰方法的问题还没有得到充分的回答。在本文中,我们提供的数值证据表明,仅仅使用部分不对称的削减检测到的射流的横向动量允许一个明确的分离之间的BFKL-固定顺序的预测,在一些可观测的相关的Mueller-Navelet射流生产过程。

英文摘要:

The production of forward jets separated by a large rapidity gap at LHC, the so-called Mueller-Navelet jets, is a fundamental testfield for perturbative QCD in the high-energy limit. Several analyses have already provided with evidence about the compatibility of theoretical predictions, based on collinear factorization and BFKL resummation of energy logarithms in the next-to-leading approximation, with the CMS experimental data at 7 TeV of center-of-mass energy. However, the question if the same data can be described also by fixed-order perturbative approaches has not been yet fully answered. In this paper we provide numerical evidence that the mere use of partially asymmetric cuts in the transverse momenta of the detected jets allows a clear separation between BFKL-resummed and fixed-order predictions in some observables related with the Mueller-Navelet jet production process.

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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