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Phenomenology of the Higgs effective Lagrangian via FeynRules

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journal contribution
posted on 2023-06-21, 06:02 authored by Adam Alloul, Benjamin Fuks, Veronica Sanz
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.

Funding

Particle Physics Theory at Royal Holloway and Sussex; G0742; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/J000477/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1029-8479

Publisher

Springer Verlag

Issue

4

Volume

2014

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-12-13

First Open Access (FOA) Date

2017-12-13

First Compliant Deposit (FCD) Date

2017-12-12

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