U(1)Lμ−Lτ for light dark matter, gμ − 2, the 511 keV excess and the Hubble tension
In this paper we introduce a light Dirac particle ψ as thermal dark matter candidate in a U(1)Lμ−Lτ model. Together with the new gauge boson X, we find a possible parameter space with mX≃20 MeV, U(1)Lμ−Lτ coupling gX≃5⋅10−4 and mψ≳mX/2 where the (g−2)μ anomaly, dark matter, the Hubble tension, and (...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-04-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S037026932200082X |
| _version_ | 1818356538369114112 |
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| author | Manuel Drees Wenbin Zhao |
| author_facet | Manuel Drees Wenbin Zhao |
| author_sort | Manuel Drees |
| collection | DOAJ |
| description | In this paper we introduce a light Dirac particle ψ as thermal dark matter candidate in a U(1)Lμ−Lτ model. Together with the new gauge boson X, we find a possible parameter space with mX≃20 MeV, U(1)Lμ−Lτ coupling gX≃5⋅10−4 and mψ≳mX/2 where the (g−2)μ anomaly, dark matter, the Hubble tension, and (part of) the excess of 511 keV photons from the region near the galactic center can be explained simultaneously. This model is safe from current experimental and astrophysical constraints, but can be probed by the next generation of neutrino experiments as well as low–energy e+e− colliders. |
| first_indexed | 2024-12-13T19:58:48Z |
| format | Article |
| id | doaj.art-d0819272d84a40c4b66ebac6f5d3e18d |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-13T19:58:48Z |
| publishDate | 2022-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-d0819272d84a40c4b66ebac6f5d3e18d2022-12-21T23:33:15ZengElsevierPhysics Letters B0370-26932022-04-01827136948U(1)Lμ−Lτ for light dark matter, gμ − 2, the 511 keV excess and the Hubble tensionManuel Drees0Wenbin Zhao1Bethe Center for Theoretical Physics and Physikalisches Institut, Universität Bonn, Nussallee 12, 53115 Bonn, GermanyCorresponding author.; Bethe Center for Theoretical Physics and Physikalisches Institut, Universität Bonn, Nussallee 12, 53115 Bonn, GermanyIn this paper we introduce a light Dirac particle ψ as thermal dark matter candidate in a U(1)Lμ−Lτ model. Together with the new gauge boson X, we find a possible parameter space with mX≃20 MeV, U(1)Lμ−Lτ coupling gX≃5⋅10−4 and mψ≳mX/2 where the (g−2)μ anomaly, dark matter, the Hubble tension, and (part of) the excess of 511 keV photons from the region near the galactic center can be explained simultaneously. This model is safe from current experimental and astrophysical constraints, but can be probed by the next generation of neutrino experiments as well as low–energy e+e− colliders.http://www.sciencedirect.com/science/article/pii/S037026932200082XU(1)Lμ−Lτ modelDark matterHubble tension511 KeV line |
| spellingShingle | Manuel Drees Wenbin Zhao U(1)Lμ−Lτ for light dark matter, gμ − 2, the 511 keV excess and the Hubble tension Physics Letters B U(1)Lμ−Lτ model Dark matter Hubble tension 511 KeV line |
| title | U(1)Lμ−Lτ for light dark matter, gμ − 2, the 511 keV excess and the Hubble tension |
| title_full | U(1)Lμ−Lτ for light dark matter, gμ − 2, the 511 keV excess and the Hubble tension |
| title_fullStr | U(1)Lμ−Lτ for light dark matter, gμ − 2, the 511 keV excess and the Hubble tension |
| title_full_unstemmed | U(1)Lμ−Lτ for light dark matter, gμ − 2, the 511 keV excess and the Hubble tension |
| title_short | U(1)Lμ−Lτ for light dark matter, gμ − 2, the 511 keV excess and the Hubble tension |
| title_sort | u 1 lμ lτ for light dark matter gμ 2 the 511 kev excess and the hubble tension |
| topic | U(1)Lμ−Lτ model Dark matter Hubble tension 511 KeV line |
| url | http://www.sciencedirect.com/science/article/pii/S037026932200082X |
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