Next-to-leading order predictions for Zγ + jet and Zγγ final states at the LHC
Next-to-leading order predictions for Zγ + jet and Zγγ final states at the LHC
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LHC 中 Zγ + jet 和 Zγγ 最终状态的次领先顺序预测
DOI：
10.1007/jhep11(2012)162
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发表时间：
2012
影响因子：
5.4
通讯作者：
Ciaran Williams
中科院分区：
文献类型：
--
作者：
J. Campbell;H. Hartanto;Ciaran Williams
摘要我们提出了对包含通过 Z 玻色子衰变与光子和喷流或一对光子相关的轻子的最终状态的次领先顺序预测。包括来自最终状态轻子的光子辐射的影响，我们还考虑了碎片过程产生的贡献。提出了大型强子对撞机在含有带电轻子的最终状态和中微子的情况下的现象学研究。我们还使用 Stewart 和 Tackmann 引入的程序来提供对喷射舱 Zγ 横截面理论计算中固有的尺度不确定性的可靠估计。这些计算已在公共代码 MCFM 中实现。
A bstractWe present next-to-leading order predictions for final states containing leptons produced through the decay of a Z boson in association with either a photon and a jet, or a pair of photons. The effect of photon radiation from the final state leptons is included and we also allow for contributions arising from fragmentation processes. Phenomenological studies are presented for the LHC in the case of final states containing charged leptons and in the case of neutrinos. We also use the procedure introduced by Stewart and Tackmann to provide a reliable estimate of the scale uncertainty inherent in our theoretical calculations of jet-binned Zγ cross sections. These computations have been implemented in the public code MCFM.