Higgs stability-bound and fermionic dark matter
Abstract Higgs-portal interactions of fermionic dark matter — in contrast to fermions coupled via Yukawa interactions — can have a stabilizing effect on the standard-model Higgs potential. A non-perturbative renormalization-group analysis reveals that, similar to higher-order operators in the Higgs...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-02-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP02(2019)166 |
| _version_ | 1828855873886224384 |
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| author | Aaron Held René Sondenheimer |
| author_facet | Aaron Held René Sondenheimer |
| author_sort | Aaron Held |
| collection | DOAJ |
| description | Abstract Higgs-portal interactions of fermionic dark matter — in contrast to fermions coupled via Yukawa interactions — can have a stabilizing effect on the standard-model Higgs potential. A non-perturbative renormalization-group analysis reveals that, similar to higher-order operators in the Higgs potential itself, the fermionic portal coupling can increase the metastability scale by only about one order of magnitude. Assuming a thermal freeze-out via the Higgs-portal coupling, this regime of very weakly coupled dark matter is in conflict with relic-density constraints. Conversely, fermionic dark matter with the right relic abundance requires either a low cutoff scale of the effective field theory or a strongly interacting scalar sector. This results in a triviality problem in the scalar sector which persists at the non-perturbative level. The corresponding breakdown of the effective field theory suggests a larger dark sector to be present not too far above the dark-fermion mass-scale. |
| first_indexed | 2024-12-13T01:02:53Z |
| format | Article |
| id | doaj.art-56af41fe5b5044b5a54da6c0beb73172 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-13T01:02:53Z |
| publishDate | 2019-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-56af41fe5b5044b5a54da6c0beb731722022-12-22T00:04:39ZengSpringerOpenJournal of High Energy Physics1029-84792019-02-012019212410.1007/JHEP02(2019)166Higgs stability-bound and fermionic dark matterAaron Held0René Sondenheimer1Institut für Theoretische Physik, Universität HeidelbergTheoretisch-Physikalisches Institut, Friedrich-Schiller-Universität JenaAbstract Higgs-portal interactions of fermionic dark matter — in contrast to fermions coupled via Yukawa interactions — can have a stabilizing effect on the standard-model Higgs potential. A non-perturbative renormalization-group analysis reveals that, similar to higher-order operators in the Higgs potential itself, the fermionic portal coupling can increase the metastability scale by only about one order of magnitude. Assuming a thermal freeze-out via the Higgs-portal coupling, this regime of very weakly coupled dark matter is in conflict with relic-density constraints. Conversely, fermionic dark matter with the right relic abundance requires either a low cutoff scale of the effective field theory or a strongly interacting scalar sector. This results in a triviality problem in the scalar sector which persists at the non-perturbative level. The corresponding breakdown of the effective field theory suggests a larger dark sector to be present not too far above the dark-fermion mass-scale.http://link.springer.com/article/10.1007/JHEP02(2019)166Non-perturbative renormalization |
| spellingShingle | Aaron Held René Sondenheimer Higgs stability-bound and fermionic dark matter Journal of High Energy Physics Non-perturbative renormalization |
| title | Higgs stability-bound and fermionic dark matter |
| title_full | Higgs stability-bound and fermionic dark matter |
| title_fullStr | Higgs stability-bound and fermionic dark matter |
| title_full_unstemmed | Higgs stability-bound and fermionic dark matter |
| title_short | Higgs stability-bound and fermionic dark matter |
| title_sort | higgs stability bound and fermionic dark matter |
| topic | Non-perturbative renormalization |
| url | http://link.springer.com/article/10.1007/JHEP02(2019)166 |
| work_keys_str_mv | AT aaronheld higgsstabilityboundandfermionicdarkmatter AT renesondenheimer higgsstabilityboundandfermionicdarkmatter |