Better Higgs-CP tests through information geometry
Measuring the CP symmetry in the Higgs sector is one of the key tasks of the LHC and a crucial ingredient for precision studies, for example in the language of effective Lagrangians. We systematically analyze which LHC signatures offer dedicated CP measurements in the Higgs-gauge sector, and discuss...
Guardado en:
| Autores principales: | , , |
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| Formato: | Article (Journal) Chapter/Article |
| Lenguaje: | inglés |
| Publicado: |
6 Dec 2017
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| In: |
Arxiv
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| Acceso en línea: | Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1712.02350
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| Notas de Autor: | Johann Brehmer, Felix Kling, Tilman Plehn, and Tim M.P. Tait |
| Sumario: | Measuring the CP symmetry in the Higgs sector is one of the key tasks of the LHC and a crucial ingredient for precision studies, for example in the language of effective Lagrangians. We systematically analyze which LHC signatures offer dedicated CP measurements in the Higgs-gauge sector, and discuss the nature of the information they provide. Based on the Fisher information measure, we compare the maximal reach for CP-violating effects in weak boson fusion, associated ZH production, and Higgs decays into four leptons. We find a subtle balance between more theory-independent approaches and more powerful analysis channels, indicating that rigorous evidence for CP violation in the Higgs-gauge sector will likely require a multi-step process. |
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| Notas: | Gesehen am 01.12.2020 |
| Descripción Física: | Online Resource |