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Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons
The calculation of the Higgs mass in general renormalisable field theories has been plagued by the so-called “Goldstone Boson Catastrophe,” where light (would-be) Goldstone bosons give infra-red divergent loop integrals. In supersymmetric models, previous approaches included a workaround that amelio...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6956917/ https://www.ncbi.nlm.nih.gov/pubmed/31997929 http://dx.doi.org/10.1140/epjc/s10052-017-5303-x |
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author | Braathen, Johannes Goodsell, Mark D. Staub, Florian |
author_facet | Braathen, Johannes Goodsell, Mark D. Staub, Florian |
author_sort | Braathen, Johannes |
collection | PubMed |
description | The calculation of the Higgs mass in general renormalisable field theories has been plagued by the so-called “Goldstone Boson Catastrophe,” where light (would-be) Goldstone bosons give infra-red divergent loop integrals. In supersymmetric models, previous approaches included a workaround that ameliorated the problem for most, but not all, parameter space regions; while giving divergent results everywhere for non-supersymmetric models! We present an implementation of a general solution to the problem in the public code SARAH, along with new calculations of some necessary loop integrals and generic expressions. We discuss the validation of our code in the Standard Model, where we find remarkable agreement with the known results. We then show new applications in Split SUSY, the NMSSM, the Two-Higgs-Doublet Model, and the Georgi–Machacek model. In particular, we take some first steps to exploring where the habit of using tree-level mass relations in non-supersymmetric models breaks down, and show that the loop corrections usually become very large well before naive perturbativity bounds are reached. |
format | Online Article Text |
id | pubmed-6956917 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-69569172020-01-27 Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons Braathen, Johannes Goodsell, Mark D. Staub, Florian Eur Phys J C Part Fields Regular Article - Theoretical Physics The calculation of the Higgs mass in general renormalisable field theories has been plagued by the so-called “Goldstone Boson Catastrophe,” where light (would-be) Goldstone bosons give infra-red divergent loop integrals. In supersymmetric models, previous approaches included a workaround that ameliorated the problem for most, but not all, parameter space regions; while giving divergent results everywhere for non-supersymmetric models! We present an implementation of a general solution to the problem in the public code SARAH, along with new calculations of some necessary loop integrals and generic expressions. We discuss the validation of our code in the Standard Model, where we find remarkable agreement with the known results. We then show new applications in Split SUSY, the NMSSM, the Two-Higgs-Doublet Model, and the Georgi–Machacek model. In particular, we take some first steps to exploring where the habit of using tree-level mass relations in non-supersymmetric models breaks down, and show that the loop corrections usually become very large well before naive perturbativity bounds are reached. Springer Berlin Heidelberg 2017-11-10 2017 /pmc/articles/PMC6956917/ /pubmed/31997929 http://dx.doi.org/10.1140/epjc/s10052-017-5303-x Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3 |
spellingShingle | Regular Article - Theoretical Physics Braathen, Johannes Goodsell, Mark D. Staub, Florian Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons |
title | Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons |
title_full | Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons |
title_fullStr | Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons |
title_full_unstemmed | Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons |
title_short | Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons |
title_sort | supersymmetric and non-supersymmetric models without catastrophic goldstone bosons |
topic | Regular Article - Theoretical Physics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6956917/ https://www.ncbi.nlm.nih.gov/pubmed/31997929 http://dx.doi.org/10.1140/epjc/s10052-017-5303-x |
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