Direct detection of electroweak dark matter
Abstract TeV-scale dark matter is well motivated by notions of naturalness as the new physics threshold is expected to emerge in the TeV regime. We generalise the Standard Model by including an arbitrary SU(2) multiplet of dark matter particles in non-chiral representation. The pseudo-real represent...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-12014-8 |
| _version_ | 1797647162508574720 |
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| author | Ramtin Amintaheri |
| author_facet | Ramtin Amintaheri |
| author_sort | Ramtin Amintaheri |
| collection | DOAJ |
| description | Abstract TeV-scale dark matter is well motivated by notions of naturalness as the new physics threshold is expected to emerge in the TeV regime. We generalise the Standard Model by including an arbitrary SU(2) multiplet of dark matter particles in non-chiral representation. The pseudo-real representations can be viable DM candidates if one considers a higher-dimensional operator which induces mass-splitting, and avoids the tree-level inelastic scattering through Z-boson exchange. These effective operators give rise to sizable contributions from Higgs mediated dark matter interactions with quarks and gluons. A linear combination of the effective couplings named $$\lambda $$ λ is identified as the critical parameter in determining the magnitude of the cross-section. When $$\lambda $$ λ is smaller than the critical value, the theory behaves similar to the known renormalisable model, and the scattering rate stays below the current experimental reach. Nevertheless, above the criticality, the contribution from the higher-dimensional operators significantly changes the phenomenology. The scattering amplitude of pseudo-real models will be coherently enhanced, so that it would be possible for next generation large-exposure experiments to fully probe these multiplets. We studied the parameter space of the theory, taking into account both indirect astrophysical and direct search constraints. It is inferred that multi-TeV mass scale remains a viable region, quite promising for forthcoming dark matter experiments. |
| first_indexed | 2024-03-11T15:12:21Z |
| format | Article |
| id | doaj.art-0685527fad994cdab7283b455a0f14cb |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-03-11T15:12:21Z |
| publishDate | 2023-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-0685527fad994cdab7283b455a0f14cb2023-10-29T12:34:29ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-09-0183913110.1140/epjc/s10052-023-12014-8Direct detection of electroweak dark matterRamtin Amintaheri0School of Physics, The University of SydneyAbstract TeV-scale dark matter is well motivated by notions of naturalness as the new physics threshold is expected to emerge in the TeV regime. We generalise the Standard Model by including an arbitrary SU(2) multiplet of dark matter particles in non-chiral representation. The pseudo-real representations can be viable DM candidates if one considers a higher-dimensional operator which induces mass-splitting, and avoids the tree-level inelastic scattering through Z-boson exchange. These effective operators give rise to sizable contributions from Higgs mediated dark matter interactions with quarks and gluons. A linear combination of the effective couplings named $$\lambda $$ λ is identified as the critical parameter in determining the magnitude of the cross-section. When $$\lambda $$ λ is smaller than the critical value, the theory behaves similar to the known renormalisable model, and the scattering rate stays below the current experimental reach. Nevertheless, above the criticality, the contribution from the higher-dimensional operators significantly changes the phenomenology. The scattering amplitude of pseudo-real models will be coherently enhanced, so that it would be possible for next generation large-exposure experiments to fully probe these multiplets. We studied the parameter space of the theory, taking into account both indirect astrophysical and direct search constraints. It is inferred that multi-TeV mass scale remains a viable region, quite promising for forthcoming dark matter experiments.https://doi.org/10.1140/epjc/s10052-023-12014-8 |
| spellingShingle | Ramtin Amintaheri Direct detection of electroweak dark matter European Physical Journal C: Particles and Fields |
| title | Direct detection of electroweak dark matter |
| title_full | Direct detection of electroweak dark matter |
| title_fullStr | Direct detection of electroweak dark matter |
| title_full_unstemmed | Direct detection of electroweak dark matter |
| title_short | Direct detection of electroweak dark matter |
| title_sort | direct detection of electroweak dark matter |
| url | https://doi.org/10.1140/epjc/s10052-023-12014-8 |
| work_keys_str_mv | AT ramtinamintaheri directdetectionofelectroweakdarkmatter |