Extending global fits of 4D Composite Higgs Models with partially composite leptons
We perform the first convergent Bayesian global fits of 4D Composite Higgs Models with partially-composite third generation quarks and leptons based on the minimal SO(5) → SO(4) symmetry breaking pattern. We consider two models with the τ lepton and its associated neutrino in different representatio...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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Springer
2024
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| _version_ | 1811140818036064256 |
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| author | Carragher, E Goh, K Su, W White, M Williams, AG |
| author_facet | Carragher, E Goh, K Su, W White, M Williams, AG |
| author_sort | Carragher, E |
| collection | OXFORD |
| description | We perform the first convergent Bayesian global fits of 4D Composite Higgs Models with partially-composite third generation quarks and leptons based on the minimal SO(5) → SO(4) symmetry breaking pattern. We consider two models with the τ lepton and its associated neutrino in different representations of SO(5). Fitting each model with a wide array of experimental constraints allows us to analyse the Bayesian evidence and currently-observed fine-tuning of each model by calculating the Kullback-Leibler divergence between their respective priors and posteriors. Notably both models are found to be capable of satisfying all constraints simultaneously at the 3σ level at scales of < 5 TeV. From a Bayesian viewpoint of naturalness the model with leptons in the 14 and 10 representations is preferred over those in the 5 representation due to its lower fine-tuning. Finally, we consider the experimental signatures for the preferred parameters in these models, including lepton partner decay signatures and gluon-fusion produced Higgs signal strengths, and discuss their potential phenomenology at future high-luminosity LHC runs. |
| first_indexed | 2024-09-25T04:28:01Z |
| format | Journal article |
| id | oxford-uuid:e1c10e54-8928-42c1-b90d-d999bea2fc4b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:28:01Z |
| publishDate | 2024 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:e1c10e54-8928-42c1-b90d-d999bea2fc4b2024-08-23T20:10:07ZExtending global fits of 4D Composite Higgs Models with partially composite leptonsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e1c10e54-8928-42c1-b90d-d999bea2fc4bEnglishJisc Publications RouterSpringer2024Carragher, EGoh, KSu, WWhite, MWilliams, AGWe perform the first convergent Bayesian global fits of 4D Composite Higgs Models with partially-composite third generation quarks and leptons based on the minimal SO(5) → SO(4) symmetry breaking pattern. We consider two models with the τ lepton and its associated neutrino in different representations of SO(5). Fitting each model with a wide array of experimental constraints allows us to analyse the Bayesian evidence and currently-observed fine-tuning of each model by calculating the Kullback-Leibler divergence between their respective priors and posteriors. Notably both models are found to be capable of satisfying all constraints simultaneously at the 3σ level at scales of < 5 TeV. From a Bayesian viewpoint of naturalness the model with leptons in the 14 and 10 representations is preferred over those in the 5 representation due to its lower fine-tuning. Finally, we consider the experimental signatures for the preferred parameters in these models, including lepton partner decay signatures and gluon-fusion produced Higgs signal strengths, and discuss their potential phenomenology at future high-luminosity LHC runs. |
| spellingShingle | Carragher, E Goh, K Su, W White, M Williams, AG Extending global fits of 4D Composite Higgs Models with partially composite leptons |
| title | Extending global fits of 4D Composite Higgs Models with partially composite leptons |
| title_full | Extending global fits of 4D Composite Higgs Models with partially composite leptons |
| title_fullStr | Extending global fits of 4D Composite Higgs Models with partially composite leptons |
| title_full_unstemmed | Extending global fits of 4D Composite Higgs Models with partially composite leptons |
| title_short | Extending global fits of 4D Composite Higgs Models with partially composite leptons |
| title_sort | extending global fits of 4d composite higgs models with partially composite leptons |
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