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Dilaton Effective Field Theory

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

Universe, Volume: 9, Issue: 1, Start page: 10

Swansea University Author: Maurizio Piai Orcid Logo

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DOI (Published version): 10.3390/universe9010010

Abstract

We review and extend recent studies of dilaton effective field theory (dEFT) which provide a framework for the description of the Higgs boson as a composite structure. We first describe the dEFT as applied to lattice data for a class of gauge theories with near-conformal infrared behavior. It includ...

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Published in: Universe
ISSN: 2218-1997
Published: MDPI AG 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa62099
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first_indexed 2022-12-01T09:46:18Z
last_indexed 2023-01-13T19:23:19Z
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spelling 2023-01-12T11:27:24.0775644 v2 62099 2022-12-01 Dilaton Effective Field Theory 3ce295f2c7cc318bac7da18f9989d8c3 0000-0002-2251-0111 Maurizio Piai Maurizio Piai true false 2022-12-01 SPH We review and extend recent studies of dilaton effective field theory (dEFT) which provide a framework for the description of the Higgs boson as a composite structure. We first describe the dEFT as applied to lattice data for a class of gauge theories with near-conformal infrared behavior. It includes the dilaton associated with the spontaneous breaking of (approximate) scale invariance, and a set of pseudo-Nambu-Goldstone bosons (pNGBs) associated with the spontaneous breaking of an (approximate) internal global symmetry. The theory contains two small symmetry-breaking parameters. We display the leading-order (LO) Lagrangian, and review its fit to lattice data for the SU(3) gauge theory with Nf = 8 Dirac fermions in the fundamental representation. We then develop power-counting rules to identify the corrections emerging at next-to-leading order (NLO) in the dEFT action. We list the NLO operators that appear and provide estimates for the coefficients. We comment on implications for composite-Higgs model building. Journal Article Universe 9 1 10 MDPI AG 2218-1997 lattice gauge theory; physics beyond the standard model 23 12 2022 2022-12-23 10.3390/universe9010010 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University Not Required The work of M.P. was supported, in part, by the STFC Consolidated Grants No. ST/P00055X/1 and No. ST/T000813/1. M.P. received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 813942. 2023-01-12T11:27:24.0775644 2022-12-01T09:41:49.6890993 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Thomas Appelquist 0000-0002-0457-6336 1 James Ingoldby 0000-0002-4690-3163 2 Maurizio Piai 0000-0002-2251-0111 3 62099__26125__289cbc254a154d2784e03a1808e9776a.pdf universe-09-00010.pdf 2022-12-24T13:33:07.0587716 Output 1727998 application/pdf Version of Record true © 2022 by the authors. This is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license true eng https://creativecommons.org/licenses/by/4.0/
title Dilaton Effective Field Theory
spellingShingle Dilaton Effective Field Theory
Maurizio Piai
title_short Dilaton Effective Field Theory
title_full Dilaton Effective Field Theory
title_fullStr Dilaton Effective Field Theory
title_full_unstemmed Dilaton Effective Field Theory
title_sort Dilaton Effective Field Theory
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 Universe
container_volume 9
container_issue 1
container_start_page 10
publishDate 2022
institution Swansea University
issn 2218-1997
doi_str_mv 10.3390/universe9010010
publisher MDPI AG
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 review and extend recent studies of dilaton effective field theory (dEFT) which provide a framework for the description of the Higgs boson as a composite structure. We first describe the dEFT as applied to lattice data for a class of gauge theories with near-conformal infrared behavior. It includes the dilaton associated with the spontaneous breaking of (approximate) scale invariance, and a set of pseudo-Nambu-Goldstone bosons (pNGBs) associated with the spontaneous breaking of an (approximate) internal global symmetry. The theory contains two small symmetry-breaking parameters. We display the leading-order (LO) Lagrangian, and review its fit to lattice data for the SU(3) gauge theory with Nf = 8 Dirac fermions in the fundamental representation. We then develop power-counting rules to identify the corrections emerging at next-to-leading order (NLO) in the dEFT action. We list the NLO operators that appear and provide estimates for the coefficients. We comment on implications for composite-Higgs model building.
published_date 2022-12-23T04:21:27Z
_version_ 1763754416543891456
score 11.037056

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