Cosmological constraints on dark scalar
Abstract We discuss cosmological constraints on a dark scalar particle mixing with the Standard Model Higgs boson. We pay particular attention to the dark scalar production process when the reheating temperature of the Universe is very low, which allows us to give a conservative limit on the low-mas...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2022-03-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP03(2022)198 |
| _version_ | 1818355862364749824 |
|---|---|
| author | Masahiro Ibe Shin Kobayashi Yuhei Nakayama Satoshi Shirai |
| author_facet | Masahiro Ibe Shin Kobayashi Yuhei Nakayama Satoshi Shirai |
| author_sort | Masahiro Ibe |
| collection | DOAJ |
| description | Abstract We discuss cosmological constraints on a dark scalar particle mixing with the Standard Model Higgs boson. We pay particular attention to the dark scalar production process when the reheating temperature of the Universe is very low, which allows us to give a conservative limit on the low-mass scalar particle. We also study the effect of the self-interaction of the dark scalars and find this has a significant impact on the cosmological constraints. We obtain the most conservative cosmological constraint on the dark scalar, which is complementary to accelerator experiments and astrophysical observations. |
| first_indexed | 2024-12-13T19:48:04Z |
| format | Article |
| id | doaj.art-00a4968751c94794b15ef70208afebf8 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-13T19:48:04Z |
| publishDate | 2022-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-00a4968751c94794b15ef70208afebf82022-12-21T23:33:30ZengSpringerOpenJournal of High Energy Physics1029-84792022-03-012022314010.1007/JHEP03(2022)198Cosmological constraints on dark scalarMasahiro Ibe0Shin Kobayashi1Yuhei Nakayama2Satoshi Shirai3ICRR, The University of TokyoICRR, The University of TokyoICRR, The University of TokyoKavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of TokyoAbstract We discuss cosmological constraints on a dark scalar particle mixing with the Standard Model Higgs boson. We pay particular attention to the dark scalar production process when the reheating temperature of the Universe is very low, which allows us to give a conservative limit on the low-mass scalar particle. We also study the effect of the self-interaction of the dark scalars and find this has a significant impact on the cosmological constraints. We obtain the most conservative cosmological constraint on the dark scalar, which is complementary to accelerator experiments and astrophysical observations.https://doi.org/10.1007/JHEP03(2022)198Cosmology of Theories BSMNew Light Particles |
| spellingShingle | Masahiro Ibe Shin Kobayashi Yuhei Nakayama Satoshi Shirai Cosmological constraints on dark scalar Journal of High Energy Physics Cosmology of Theories BSM New Light Particles |
| title | Cosmological constraints on dark scalar |
| title_full | Cosmological constraints on dark scalar |
| title_fullStr | Cosmological constraints on dark scalar |
| title_full_unstemmed | Cosmological constraints on dark scalar |
| title_short | Cosmological constraints on dark scalar |
| title_sort | cosmological constraints on dark scalar |
| topic | Cosmology of Theories BSM New Light Particles |
| url | https://doi.org/10.1007/JHEP03(2022)198 |
| work_keys_str_mv | AT masahiroibe cosmologicalconstraintsondarkscalar AT shinkobayashi cosmologicalconstraintsondarkscalar AT yuheinakayama cosmologicalconstraintsondarkscalar AT satoshishirai cosmologicalconstraintsondarkscalar |