Electroweakino pair production at the LHC: NLO SUSY-QCD corrections and parton-shower effects
Electroweakino pair production at the LHC: NLO SUSY-QCD corrections and parton-shower effects
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DOI：
10.1007/jhep07(2016)083
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发表时间：
2016-07
影响因子：
5.4
通讯作者：
J. Baglio;B. Jäger;M. Kesenheimer
中科院分区：
文献类型：
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作者：
J. Baglio;B. Jäger;M. Kesenheimer
我们提出了一套 NLO SUSY-QCD 计算，用于大型强子对撞机上中性子和电荷子的配对产生，以及它们与 POWHEG-BOX 程序包框架中的parton-shower程序的匹配。我们开发的代码提供了一个 SUSY Les Houches Accord 接口，用于设置超对称输入参数。中性子和电荷子的衰变以及部分顿簇射效应可以用 PYTHIA 来模拟。为了说明我们程序的功能，我们提出了代表性 SUSY 参数点的现象学结果。我们发现 NLO-QCD 校正显着提高了中性子和电荷子的生产率。帕顿簇射效应对弱子分布的影响很小，但对射流分布的影响却不可忽略。
We present a set of NLO SUSY-QCD calculations for the pair production of neutralinos and charginos at the LHC, and their matching to parton-shower programs in the framework of the POWHEG-BOX program package. The code we have developed provides a SUSY Les Houches Accord interface for setting supersymmetric input parameters. Decays of the neutralinos and charginos and parton-shower effects can be simulated with PYTHIA. To illustrate the capabilities of our program, we present phenomenological results for a representative SUSY parameter point. We find that NLO-QCD corrections increase the production rates for neutralinos and charginos significantly. The impact of parton-shower effects on distributions of the weakinos is small, but non-negligible for jet distributions.