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Sudakov effects in central-forward dijet production in high energy factorization
Physics Letters B ( IF 4.4 ) Pub Date : 2021-01-14 , DOI: 10.1016/j.physletb.2021.136078
A. van Hameren , P. Kotko , K. Kutak , S. Sapeta

We discuss central-forward dijet production at LHC energies within the framework of high energy factorization. In our study, we profit from the recent progress on consistent merging of Sudakov resummation with small-x effects, which allows us to compute two different gluon distributions which depend on longitudinal momentum, transverse momentum and the hard scale of the process: one for the quark channel and one for the gluon channel. The small-x resummation is included by means of the BK equation supplemented with a kinematic constraint and subleading corrections. We test the new gluon distributions against existing CMS data for transverse momentum spectra in forward-central dijet production. We obtain results which are largely consistent with our earlier predictions based on model implementation of Sudakov form factors. In addition, we study dijet azimuthal decorrelations for the forward-central jets, which are known to be sensitive to the modeling of soft radiation.



中文翻译:

苏达科夫效应在高能分解中的中央前向双射流生产中

我们讨论了在高能量分解框架下以LHC能量为中心进行的双向喷射生产。在我们的研究中,我们受益于Sudakov恢复与small- x效应的持续合并的最新进展,这使我们能够计算两种不同的胶子分布,这取决于纵向动量,横向动量和过程的硬比例:一个用于夸克通道和胶子通道之一。小x通过补充了运动学约束和超前校正的BK方程,可以实现恢复。我们针对现有的CMS数据对新的胶子分布进行了测试,以了解前向中央双喷射生产中的横向动量谱。我们获得的结果与基于Sudakov形状因子的模型实现的先前预测基本一致。此外,我们研究了前向中央喷射的双喷射方位角去相关,这对软辐射的建模非常敏感。

更新日期:2021-01-20
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