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Nearly Conformal Composite Higgs Model

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

Physical Review Letters, Volume: 126, Issue: 19

Swansea University Author: Maurizio Piai Orcid Logo

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DOI (Published version): 10.1103/physrevlett.126.191804

Abstract

We analyze a composite Higgs model based on the confining SU(3) gauge theory with Nf = 8 Dirac fermions in the fundamental representation. This gauge theory has been studied on the lattice and shown to be well described by a dilaton effective field theory (EFT). Here we modify the EFT by assigning s...

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Published in: Physical Review Letters
ISSN: 0031-9007 1079-7114
Published: American Physical Society (APS) 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56838
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first_indexed 2021-05-24T13:25:52Z
last_indexed 2023-01-11T14:36:19Z
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spelling 2022-10-25T14:02:00.1110024 v2 56838 2021-05-10 Nearly Conformal Composite Higgs Model 3ce295f2c7cc318bac7da18f9989d8c3 0000-0002-2251-0111 Maurizio Piai Maurizio Piai true false 2021-05-10 SPH We analyze a composite Higgs model based on the confining SU(3) gauge theory with Nf = 8 Dirac fermions in the fundamental representation. This gauge theory has been studied on the lattice and shown to be well described by a dilaton effective field theory (EFT). Here we modify the EFT by assigning standard-model quantum numbers such that four of the composite pseudo-Nambu- Goldstone boson (pNGB) fields form the standard-model Higgs doublet, by coupling it to the top quark, and by adding to the potential a term that triggers electroweak symmetry breaking. The model contains a pNGB Higgs boson, a set of heavier pNGBs, and an approximate dilaton in the same mass range. We study the phenomenology of the model, and discuss the amount of tuning required to ensure consistency with current direct and indirect bounds on new physics, highlighting the role of the dilaton field. Journal Article Physical Review Letters 126 19 American Physical Society (APS) 0031-9007 1079-7114 14 5 2021 2021-05-14 10.1103/physrevlett.126.191804 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University Not Required The work of M. P. has been supported in part by the STFC Consolidated Grants No. ST/P00055X/1 and No. ST/T000813/1. M. P. 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. 2022-10-25T14:02:00.1110024 2021-05-10T11:06:31.0715817 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Thomas Appelquist 1 James Ingoldby 0000-0002-4690-3163 2 Maurizio Piai 0000-0002-2251-0111 3 56838__19930__e90065068cb5455f84d77e2958f127f2.pdf PhysRevLett.126.191804.pdf 2021-05-18T16:28:15.7036077 Output 171635 application/pdf Version of Record true Released under the terms of the Creative Commons Attribution 4.0 International license true eng https://creativecommons.org/licenses/by/4.0/
title Nearly Conformal Composite Higgs Model
spellingShingle Nearly Conformal Composite Higgs Model
Maurizio Piai
title_short Nearly Conformal Composite Higgs Model
title_full Nearly Conformal Composite Higgs Model
title_fullStr Nearly Conformal Composite Higgs Model
title_full_unstemmed Nearly Conformal Composite Higgs Model
title_sort Nearly Conformal Composite Higgs Model
author_id_str_mv 3ce295f2c7cc318bac7da18f9989d8c3
author_id_fullname_str_mv 3ce295f2c7cc318bac7da18f9989d8c3_***_Maurizio Piai
author Maurizio Piai
author2 Thomas Appelquist
James Ingoldby
Maurizio Piai
format Journal article
container_title Physical Review Letters
container_volume 126
container_issue 19
publishDate 2021
institution Swansea University
issn 0031-9007
1079-7114
doi_str_mv 10.1103/physrevlett.126.191804
publisher American Physical Society (APS)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
active_str 0
description We analyze a composite Higgs model based on the confining SU(3) gauge theory with Nf = 8 Dirac fermions in the fundamental representation. This gauge theory has been studied on the lattice and shown to be well described by a dilaton effective field theory (EFT). Here we modify the EFT by assigning standard-model quantum numbers such that four of the composite pseudo-Nambu- Goldstone boson (pNGB) fields form the standard-model Higgs doublet, by coupling it to the top quark, and by adding to the potential a term that triggers electroweak symmetry breaking. The model contains a pNGB Higgs boson, a set of heavier pNGBs, and an approximate dilaton in the same mass range. We study the phenomenology of the model, and discuss the amount of tuning required to ensure consistency with current direct and indirect bounds on new physics, highlighting the role of the dilaton field.
published_date 2021-05-14T04:12:06Z
_version_ 1763753827876470784
score 11.013148

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