HiggsSignals: Confronting arbitrary Higgs sectors with measurements at the Tevatron and the LHC
HiggsSignals: Confronting arbitrary Higgs sectors with measurements at the Tevatron and the LHC
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DOI：
10.1140/epjc/s10052-013-2711-4
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发表时间：
2014-02-07
影响因子：
4.4
通讯作者：
Weiglein, Georg
中科院分区：
文献类型：
--
作者：
Bechtle, Philip;Heinemeyer, Sven;Weiglein, Georg
HiggsSignals是一个Fortran 90计算机代码，允许测试希格斯扇区预测与LHC或Tevatron测量的希格斯速率和质量的兼容性。任意模型与任何数量的希格斯玻色子可以使用一个独立的输入方案的基础上希格斯边界进行调查。该测试是基于从预测和测量希格斯率和质量的测量计算，具有充分考虑系统学和相关性的信号率预测，光度和希格斯质量预测的能力。它具有两种互补的测试方法。第一种是峰值中心法，在这种方法中，每一个可观测量都是由在特定的假设希格斯质量下测量的希格斯信号速率来定义的，对应于一个试探性的希格斯信号。第二，质量中心的方法，其中的测试是通过比较信号率测量的理论预测在希格斯质量预测的模型进行评估。该程序允许同时使用这两种方法，这是有用的测试模型与多个希格斯玻色子。如果实验分析无法分辨多个希格斯玻色子的信号，代码会自动组合它们的信号速率。我们将HiggsSignals获得的结果与官方ATLAS和CMS结果进行比较，以确定希格斯属性的各种示例，并发现非常一致。HiggsSignals应用的几个例子，超越了LHC合作研究的场景。对于具有多个希格斯玻色子的模型，我们建议并行使用HiggsSignals和HiggsBounds，以充分利用希格斯搜索排除限制的约束能力和在GeV处看到的信号测量。
HiggsSignals is a Fortran90 computer code that allows to test the compatibility of Higgs sector predictions against Higgs rates and masses measured at the LHC or the Tevatron. Arbitrary models with any number of Higgs bosons can be investigated using a model-independent input scheme based on HiggsBounds. The test is based on the calculation of a measure from the predictions and the measured Higgs rates and masses, with the ability of fully taking into account systematics and correlations for the signal rate predictions, luminosity and Higgs mass predictions. It features two complementary methods for the test. First, the peak-centered method, in which each observable is defined by a Higgs signal rate measured at a specific hypothetical Higgs mass, corresponding to a tentative Higgs signal. Second, the mass-centered method, where the test is evaluated by comparing the signal rate measurement to the theory prediction at the Higgs mass predicted by the model. The program allows for the simultaneous use of both methods, which is useful in testing models with multiple Higgs bosons. The code automatically combines the signal rates of multiple Higgs bosons if their signals cannot be resolved by the experimental analysis. We compare results obtained with HiggsSignals to official ATLAS and CMS results for various examples of Higgs property determinations and find very good agreement. A few examples of HiggsSignals applications are provided, going beyond the scenarios investigated by the LHC collaborations. For models with more than one Higgs boson we recommend to use HiggsSignals and HiggsBounds in parallel to exploit the full constraining power of Higgs search exclusion limits and the measurements of the signal seen at GeV.