论文标题

质子核核碰撞中的前向二行在临近领先的顺序上:真实的更正

Forward dijets in proton-nucleus collisions at next-to-leading order: the real corrections

论文作者

Iancu, Edmond, Mulian, Yair

论文摘要

使用CGC有效理论以及杂种分解,我们研究了超出领先顺序的质子核碰撞中的前向二重产生。在本文中,我们计算了“真实”临近领导顺序(NLO)校正,即与三方最终状态相关的辐射校正,其中只有两个正在测量。为此,我们首先要重新审视以前论文中提出的三党横截面的先前结果。经过一些术语的重新安装后,我们为这些结果推断出新的表达式,这看起来不仅更简单,而且在物理上也更加透明。在此过程中,我们还纠正了几个错误。然后,通过整合三个最终部分中任何一个的运动学来获得对包容性Dijet生产的真正NLO校正。我们明确解决了有趣的限制,即未衡量的parton是软gluon,或划线分裂的产物。我们在这两个限制中都发现了预期的结果:在第一种情况下(软gluon)和第二种情况下初始状态和最终状态的DGLAP演化(共裂)(共裂)。随后的出版物将介绍对Dijet生产的“虚拟” NLO更正。

Using the CGC effective theory together with the hybrid factorisation, we study forward dijet production in proton-nucleus collisions beyond leading order. In this paper, we compute the "real" next-to-leading order (NLO) corrections, i.e. the radiative corrections associated with a three-parton final state, out of which only two are being measured. To that aim, we start by revisiting our previous results for the three-parton cross-section presented in our previous paper. After some reshuffling of terms, we deduce new expressions for these results, which not only look considerably simpler, but are also physically more transparent. We also correct several errors in this process. The real NLO corrections to inclusive dijet production are then obtained by integrating out the kinematics of any of the three final partons. We explicitly work out the interesting limits where the unmeasured parton is either a soft gluon, or the product of a collinear splitting. We find the expected results in both limits: the B-JIMWLK evolution of the leading-order dijet cross-section in the first case (soft gluon) and, respectively, the DGLAP evolution of the initial and final states in the second case (collinear splitting). The "virtual" NLO corrections to dijet production will be presented in a subsequent publication.

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