标题： 用SModelS解释LHC对新物理的搜索 显示英文标题

标题： Interpreting LHC searches for new physics with SModelS

摘要： ATLAS和CMS进行了大量寻找标准模型以外的物理现象（BSM）的搜索。 结果通常是在简化模型谱（SMS）的背景下呈现的， 只包含几个新粒子，具有固定的衰变分支比，从而得到作为粒子质量函数的截面通用上限。 在现实的BSM场景中解释这些限制是非显而易见的，最好通过自动计算工具来完成。 为此，我们开发了SModelS，这是一个公开工具，可以通过将任何给定的BSM模型分解为其SMS组件，并将其与大量SMS结果数据库进行对比，从而测试具有$\mathbb{Z}_2$对称性的模型。 这使得可以轻松评估模型的主要LHC约束。 此外， SModelS会返回有关现有SMS结果未涵盖的重要信号的信息。 这可用于改进BSM搜索和SMS解释的覆盖范围。 我们介绍了SModelS的工作原理，特别是分解过程、数据库以及适用实验结果的匹配。 此外，我们展示了SModelS在不同模型上的应用：MSSM模型、一个以中微子超对称粒子作为最轻超对称粒子的模型以及UMSSM模型。 这些结果说明了如何使用SModelS来识别重要的约束、未测试区域和有趣的新的信号。 显示英文摘要

摘要： ATLAS and CMS have performed a large number of searches for physics beyond the Standard Model (BSM). The results are typically presented in the context of Simplified Model Spectra (SMS), containing only a few new particles with fixed decay branching ratios, yielding generic upper limits on the cross section as a function of particle masses. The interpretation of these limits within realistic BSM scenarios is non-trivial and best done by automated computational tools. To this end we have developed SModelS, a public tool that can test any given BSM model with a $\mathbb{Z}_2$ symmetry by decomposing it into its SMS components and confronting them with a large database of SMS results. This allows to easily evaluate the main LHC constraints on the model. Additionally, SModelS returns information on important signatures that are not covered by the existing SMS results. This may be used to improve the coverage of BSM searches and SMS interpretations. We present the working principle of SModelS, in particular the decomposition procedure, the database and matching of applicable experimental results. Moreover, we present applications of SModelS to different models: the MSSM, a model with a sneutrino as the lightest supersymmetric particle and the UMSSM. These results illustrate how SModelS can be used to identify important constraints, untested regions and interesting new signatures.