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arXiv 1907.04898hep-phhep-ex
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超越标准模型的自动模拟:超对称性

Automated simulations beyond the Standard Model: supersymmetry

Stefano Frixione, Benjamin Fuks, Valentin Hirschi, Kentarou Mawatari, Hua-Sheng Shao, Marthijn P. A. Sunder, Marco Zaro

摘要:

MadGraph 5 aMC@NLO框架旨在为任何源于可重正化拉格朗日量的用户定义模型自动化所有类型的领先和次领先阶精度模拟。在本文中,我们提出了超对称理论的背景下,这些模型的所有关键成分。为了做到这一点,我们扩展了FeynRules包,使其有可能处理与超对称模型相关的不同重正化选项。我们还展示了如何处理窄共振的存在所带来的问题,从而概括了所谓的壳减法方法。我们广泛比较我们的总速率结果与Prospino 2和Resummino,并提出说明性的应用程序相关的13 TeV的大型强子对撞机,无论是在总速率和差分水平。我们用来获得这里所提出的预测的计算机程序都是公开的。

英文摘要:

The MadGraph5 aMC@NLO framework aims to automate all types of leading- and next-to-leading-order-accurate simulations for any user-defined model that stems from a renormalisable Lagrangian. In this paper, we present all of the key ingredients of such models in the context of supersymmetric theories. In order to do so, we extend the FeynRules package by giving it the possibility of dealing with different renormalisation options that are relevant to supersymmetric models. We also show how to deal with the problem posed by the presence of narrow resonances, thus generalising the so-called on-shell subtraction approaches. We extensively compare our total rate results with those of both Prospino2 and Resummino, and present illustrative applications relevant to the 13 TeV LHC, both at the total-rate and differential levels. The computer programs that we have used to obtain the predictions presented here are all publicly available.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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