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Composite two-Higgs doublet model from dilaton effective field theory

Thomas Appelquist, James Ingoldby Orcid Logo, Maurizio Piai Orcid Logo

Nuclear Physics B, Volume: 983, Start page: 115930

Swansea University Author: Maurizio Piai Orcid Logo

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DOI (Published version): 10.1016/j.nuclphysb.2022.115930

Abstract

We construct a composite two-Higgs-doublet model (2HDM) within the context of dilaton effective field 24 theory. This EFT describes the particle spectrum observed in lattice simulations of a near-conformal SU(3) 25 gauge field theory. A second Higgs doublet is naturally accommodated within the EFT,...

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Published in: Nuclear Physics B
ISSN: 0550-3213
Published: Elsevier BV 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa60799
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Abstract: We construct a composite two-Higgs-doublet model (2HDM) within the context of dilaton effective field 24 theory. This EFT describes the particle spectrum observed in lattice simulations of a near-conformal SU(3) 25 gauge field theory. A second Higgs doublet is naturally accommodated within the EFT, used previously 26 to construct a one-Higgs-doublet model. We explore the interplay of phenomenological and EFT require- 27 ments, supplemented by information from numerical lattice studies of the SU(3) gauge theory with eight 28 fundamental (Dirac) fermions. We build a viable model with moderate parameter tuning. In the relevant 29 portion of parameter space, we match the model to a conventional general description of 2HDMs, and com- 30 ment on the role of custodial symmetry (breaking) in the scalar potential. Contributions to the precision 31 electroweak parameter T provide a possible explanation for the recent measurement of the W-boson mass 32 by CDF II.
College: Faculty of Science and Engineering
Funders: The work of MP has been supported in part by the STFC Consolidated Grants ST/P00055X/1 and ST/T000813/1. MP has also received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme under grant agreement No. 813942.
Start Page: 115930

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