论文标题
在高能量的Parton重新化方法中生产三个孤立的光子
Production of three isolated photons in the parton Reggeization approach at high energies
论文作者
论文摘要
我们在LHC的Proton-Proton碰撞中研究了$ P_T $ P_T $ P_T。我们使用Parton恢复方法的领先顺序（LO）近似，并始终合并与次要领先顺序校正，源自额外喷气机的发射。对于数值计算，我们使用Parton级发电机Katie和修改的KMR型不整合的Part量分布功能，以满足任意$ x $的确切归一化条件。我们将我们的预测与来自Atlas合作中心的数据中心$ \ sqrt {s} = 8 $ TEV进行比较。我们发现，包含实际的临近级校正会导致我们的预测与数据之间的良好一致性，其精度与基于QCD的collinear parton模型的近代到接头的计算相同。在较高的能量（$ \ sqrt {s} = 13 $和27 TEV）下，Parton reggeization方法可预测较大的横截面，最高$ \ sim 15 $ \％和$ \ sim 30 $ \％。
We study a large-$p_T$ three-photon production in proton-proton collisions at the LHC. We use the leading order (LO) approximation of the parton Reggeization approach consistently merged with the next-to-leading order corrections originated from the emission of additional jet. For numerical calculations we use the parton-level generator KaTie and modified KMR-type unintegrated parton distribution functions which satisfy exact normalization conditions for arbitrary $x$. We compare our prediction with data from ATLAS collaboration at the center-of-mass energy $\sqrt{s}=8$ TeV. We find that the inclusion of the real next-to-leading-order corrections leads to a good agreement between our predictions and data with the same accuracy as for the next-to-next-to-leading calculations based on the collinear parton model of QCD. At higher energies ($\sqrt{s}=13$ and 27 TeV) parton Reggeization approach predicts larger cross sections, up to $\sim 15$ \% and $\sim 30$ \%, respectively.
