Extending global fits of 4D Composite Higgs Models with partially composite leptons

dc.contributor.authorCarragher, E.
dc.contributor.authorGoh, K.
dc.contributor.authorSu, W.
dc.contributor.authorWhite, M.
dc.contributor.authorWilliams, A.G.
dc.date.issued2024
dc.description.abstractWe 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 < 5TeV. 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.
dc.description.statementofresponsibilityEthan Carragher, Kenn Goh, Wei Su, Martin White and Anthony G. Williams
dc.identifier.citationThe Journal of High Energy Physics, 2024; 2024(8):185-0-185-47
dc.identifier.doi10.1007/jhep08(2024)185
dc.identifier.issn1029-8479
dc.identifier.issn1029-8479
dc.identifier.orcidGoh, K. [0000-0002-5991-2704]
dc.identifier.orcidWhite, M. [0000-0001-5474-4580]
dc.identifier.orcidWilliams, A.G. [0000-0002-1472-1592]
dc.identifier.urihttps://hdl.handle.net/2440/143693
dc.language.isoen
dc.publisherSpringer Science and Business Media LLC
dc.relation.granthttp://purl.org/au-research/grants/arc/CE200100008
dc.rightsOpen Access, © The Authors. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
dc.source.urihttp://dx.doi.org/10.1007/jhep08(2024)185
dc.subjectCompositeness; Hierarchy Problem; Specific BSM Phenomenology
dc.titleExtending global fits of 4D Composite Higgs Models with partially composite leptons
dc.typeJournal article
pubs.publication-statusPublished

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