Accidentally light scalars from large representations
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866916093810966528 |
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| author | Brümmer, Felix Ferrante, Giacomo Frigerio, Michele Hambye, Thomas |
| author_facet | Brümmer, Felix Ferrante, Giacomo Frigerio, Michele Hambye, Thomas |
| contents | In models with spontaneous symmetry breaking by scalar fields in large group representations, we observe that some of the scalar masses can be loop-suppressed with respect to the naive expectation from symmetry selection rules. We present minimal models -- the $\rm{SU(2)}$ five-plet and $\rm{SU(3)}$ ten-plet -- with such accidentally light scalars, featuring compact tree-level flat directions lifted by radiative corrections. We sketch some potential applications, from stable relics and slow roll in cosmology, to hierarchy and fine-tuning problems in particle physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_10092 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Accidentally light scalars from large representations Brümmer, Felix Ferrante, Giacomo Frigerio, Michele Hambye, Thomas High Energy Physics - Phenomenology High Energy Physics - Theory In models with spontaneous symmetry breaking by scalar fields in large group representations, we observe that some of the scalar masses can be loop-suppressed with respect to the naive expectation from symmetry selection rules. We present minimal models -- the $\rm{SU(2)}$ five-plet and $\rm{SU(3)}$ ten-plet -- with such accidentally light scalars, featuring compact tree-level flat directions lifted by radiative corrections. We sketch some potential applications, from stable relics and slow roll in cosmology, to hierarchy and fine-tuning problems in particle physics. |
| title | Accidentally light scalars from large representations |
| topic | High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2307.10092 |