Systematic analysis of radiative symmetry breaking in models with extended scalar sector
Abstract Radiative symmetry breaking (RSB) is a theoretically appealing framework for the generation of mass scales through quantum effects. It can be successfully implemented in models with extended scalar and gauge sectors. We provide a systematic analysis of RSB in such models: we review the comm...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-08-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP08(2018)083 |
| _version_ | 1818297779292733440 |
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| author | Leonardo Chataignier Tomislav Prokopec Michael G. Schmidt Bogumiła Świeżewska |
| author_facet | Leonardo Chataignier Tomislav Prokopec Michael G. Schmidt Bogumiła Świeżewska |
| author_sort | Leonardo Chataignier |
| collection | DOAJ |
| description | Abstract Radiative symmetry breaking (RSB) is a theoretically appealing framework for the generation of mass scales through quantum effects. It can be successfully implemented in models with extended scalar and gauge sectors. We provide a systematic analysis of RSB in such models: we review the common approximative methods of studying RSB, emphasising their limits of applicability and discuss the relevance of the relative magnitudes of tree-level and loop contributions as well as the dependence of the results on the renormalisation scale. The general considerations are exemplified within the context of the conformal Standard Model extended with a scalar doublet of a new SU(2) X gauge group, the so-called SU(2)cSM. We show that various perturbative methods of studying RSB may yield significantly different results due to renormalisation-scale dependence. Implementing the renormalisation-group (RG) improvement method recently developed in ref. [1], which is well-suited for multi-scale models, we argue that the use of the RG improved effective potential can alleviate this scale dependence providing more reliable results. |
| first_indexed | 2024-12-13T04:24:51Z |
| format | Article |
| id | doaj.art-9e85a5cd1e9e460b9ab7472cc41c950d |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-13T04:24:51Z |
| publishDate | 2018-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-9e85a5cd1e9e460b9ab7472cc41c950d2022-12-21T23:59:42ZengSpringerOpenJournal of High Energy Physics1029-84792018-08-012018814310.1007/JHEP08(2018)083Systematic analysis of radiative symmetry breaking in models with extended scalar sectorLeonardo Chataignier0Tomislav Prokopec1Michael G. Schmidt2Bogumiła Świeżewska3Institute for Theoretical Physics, Spinoza Institute & EMMEΦ, Utrecht UniversityInstitute for Theoretical Physics, Spinoza Institute & EMMEΦ, Utrecht UniversityInstitute for Theoretical Physics, Universität HeidelbergInstitute for Theoretical Physics, Spinoza Institute & EMMEΦ, Utrecht UniversityAbstract Radiative symmetry breaking (RSB) is a theoretically appealing framework for the generation of mass scales through quantum effects. It can be successfully implemented in models with extended scalar and gauge sectors. We provide a systematic analysis of RSB in such models: we review the common approximative methods of studying RSB, emphasising their limits of applicability and discuss the relevance of the relative magnitudes of tree-level and loop contributions as well as the dependence of the results on the renormalisation scale. The general considerations are exemplified within the context of the conformal Standard Model extended with a scalar doublet of a new SU(2) X gauge group, the so-called SU(2)cSM. We show that various perturbative methods of studying RSB may yield significantly different results due to renormalisation-scale dependence. Implementing the renormalisation-group (RG) improvement method recently developed in ref. [1], which is well-suited for multi-scale models, we argue that the use of the RG improved effective potential can alleviate this scale dependence providing more reliable results.http://link.springer.com/article/10.1007/JHEP08(2018)083Beyond Standard ModelRenormalization GroupSpontaneous Symmetry BreakingConformal and W Symmetry |
| spellingShingle | Leonardo Chataignier Tomislav Prokopec Michael G. Schmidt Bogumiła Świeżewska Systematic analysis of radiative symmetry breaking in models with extended scalar sector Journal of High Energy Physics Beyond Standard Model Renormalization Group Spontaneous Symmetry Breaking Conformal and W Symmetry |
| title | Systematic analysis of radiative symmetry breaking in models with extended scalar sector |
| title_full | Systematic analysis of radiative symmetry breaking in models with extended scalar sector |
| title_fullStr | Systematic analysis of radiative symmetry breaking in models with extended scalar sector |
| title_full_unstemmed | Systematic analysis of radiative symmetry breaking in models with extended scalar sector |
| title_short | Systematic analysis of radiative symmetry breaking in models with extended scalar sector |
| title_sort | systematic analysis of radiative symmetry breaking in models with extended scalar sector |
| topic | Beyond Standard Model Renormalization Group Spontaneous Symmetry Breaking Conformal and W Symmetry |
| url | http://link.springer.com/article/10.1007/JHEP08(2018)083 |
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