Phenomenology of the Higgs effective Lagrangian via FEYNRULES
Phenomenology of the Higgs effective Lagrangian via FEYNRULES
复制标题
通过 FEYNRULES 研究希格斯有效拉格朗日现象学
DOI：
10.1007/jhep04(2014)110
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发表时间：
2014-04-16
影响因子：
5.4
通讯作者：
Sanz, Veronica
中科院分区：
文献类型：
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作者：
Alloul, Adam;Fuks, Benjamin;Sanz, Veronica
希格斯玻色子的发现和缺乏任何其他新物理学的线索，有利于用有效场论来描述非标准希格斯玻色子物理学。我们提出了一个实施的一般希格斯有效拉格朗日算子包含操作员的FEYNRULES框架中的6维，并提供详细的质量和相互作用的基础之间的翻译，特别是三点和四点的相互作用顶点涉及希格斯玻色子和规范玻色子。我们通过使用UFO接口的FEYNRULES能够生成模型文件，可以理解的MADGRAPH 5事件发生器，并具有特异性，包含所有的相互作用顶点，没有任何限制的外部腿的数量或洛伦兹结构的复杂性，说明了这种实现的优势。然后，我们研究了几个新的物理效应的总速率和不同的希格斯生产模式，包括胶子融合，与规范玻色子和di-Higgs生产的相关生产的微分分布。最后我们研究了规范玻色子和希格斯玻色子与费米子的接触相互作用。
The Higgs discovery and the lack of any other hint for new physics favor a description of non-standard Higgs physics in terms of an effective field theory. We present an implementation of a general Higgs effective Lagrangian containing operators up to dimension six in the framework of FEYNRULES and provide details on the translation between the mass and interaction bases, in particular for three- and four-point interaction vertices involving Higgs and gauge bosons. We illustrate the strengths of this implementation by using the UFO interface of FEYNRULES capable to generate model files that can be understood by the MADGRAPH 5 event generator and that have the specificity to contain all interaction vertices, without any restriction on the number of external legs or on the complexity of the Lorentz structures. We then investigate several new physics effects in total rates and differential distributions for different Higgs production modes, including gluon fusion, associated production with a gauge boson and di-Higgs production. We finally study contact interactions of gauge and Higgs bosons to fermions.