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Freeze-in sterile neutrino dark matter in a feebly gauged B − L model
http://hdl.handle.net/10458/0002001372
http://hdl.handle.net/10458/00020013725f38c2d6-b2f3-4bc3-9956-cad0868e958d
| 名前 / ファイル | ライセンス | アクション |
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||
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| 公開日 | 2025-06-23 | |||||||||||||||
| タイトル | ||||||||||||||||
| タイトル | Freeze-in sterile neutrino dark matter in a feebly gauged B − L model | |||||||||||||||
| 言語 | en | |||||||||||||||
| 言語 | ||||||||||||||||
| 言語 | eng | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| キーワード | Cosmology of Theories BSM | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| キーワード | Models for Dark Matter | |||||||||||||||
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| 言語 | en | |||||||||||||||
| キーワード | New Gauge Interactions | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| キーワード | Sterile or Heavy Neutrinos | |||||||||||||||
| 資源タイプ | ||||||||||||||||
| 資源タイプ | journal article | |||||||||||||||
| アクセス権 | ||||||||||||||||
| アクセス権 | open access | |||||||||||||||
| 著者 |
Seto, Osamu
× Seto, Osamu
× 下村, 崇
WEKO
35221
× Uchida, Yoshiki
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| 抄録 | ||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||
| 内容記述 | We consider the gauged U(1)B−L model and examine the situation where the sterile neutrino is a dark matter candidate produced by the freeze-in mechanism. In our model, the dark matter N is mainly produced by the decay of a U(1)B−L breaking scalar boson ϕ. We point out that the on-shell production of ϕ through annihilation of the U(1)B−L gauge boson Z′ plays an important role. We find that the single production of Z′ from the gluon bath in the early Universe can become the main production modes for Z′ in some parameter regions. To prevent N from being overproduced, we show that the U(1)B−L gauge coupling constant gB−L must be as small as 10−16–10−10. We also consider the case where the decay of ϕ into N is kinematically forbidden. In this case, N is generated by the scattering of Z′ and the gB−L takes values of 10−10–10−6, which can be explored in collider experiments like FASER and SHiP. | |||||||||||||||
| 言語 | en | |||||||||||||||
| bibliographic_information |
en : Journal of High Energy Physics 巻 2025, 号 5, p. 147, 発行日 2025-05-16 |
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| 出版者 | ||||||||||||||||
| 出版者 | Springer Science and Business Media LLC | |||||||||||||||
| 言語 | en | |||||||||||||||
| ISSN | ||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||
| 収録物識別子 | 10298479 | |||||||||||||||
| item_10001_relation_14 | ||||||||||||||||
| 関連タイプ | isVersionOf | |||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||
| 関連識別子 | https://doi.org/10.1007/JHEP05(2025)147 | |||||||||||||||
| 出版タイプ | ||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||
