Explaining lepton-flavor non-universality and self-interacting dark matter with $$L_\mu -L_\tau $$ L μ - L τ
Abstract Experimental hints for lepton-flavor universality violation in the muon’s magnetic moment as well as neutral- and charged-current B-meson decays require Standard-Model extensions by particles such as leptoquarks that generically lead to unacceptably fast rates of charged lepton flavor viola...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-05-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-10437-3 |
| _version_ | 1811258696507850752 |
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| author | Julian Heeck Anil Thapa |
| author_facet | Julian Heeck Anil Thapa |
| author_sort | Julian Heeck |
| collection | DOAJ |
| description | Abstract Experimental hints for lepton-flavor universality violation in the muon’s magnetic moment as well as neutral- and charged-current B-meson decays require Standard-Model extensions by particles such as leptoquarks that generically lead to unacceptably fast rates of charged lepton flavor violation and proton decay. We propose a model based on a gauged $$U(1)_{L_\mu -L_\tau }$$ U ( 1 ) L μ - L τ that eliminates all these unwanted decays by symmetry rather than finetuning and efficiently explains $$(g-2)_\mu $$ ( g - 2 ) μ , $$R_{K^{(*)}}$$ R K ( ∗ ) , $$R_{D^{(*)}}$$ R D ( ∗ ) , and neutrino masses. The $$U(1)_{L_\mu -L_\tau }$$ U ( 1 ) L μ - L τ furthermore acts as a stabilizing symmetry for dark matter and the light $$Z'$$ Z ′ gauge boson mediates velocity-dependent dark-matter self-interactions that resolve the small-scale structure problems. Lastly, even the Hubble tension can be ameliorated via the light $$Z'$$ Z ′ contribution to the relativistic degrees of freedom. |
| first_indexed | 2024-04-12T18:18:27Z |
| format | Article |
| id | doaj.art-112f576e221341c4803b4cc7ca896943 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-12T18:18:27Z |
| publishDate | 2022-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-112f576e221341c4803b4cc7ca8969432022-12-22T03:21:31ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-05-0182511210.1140/epjc/s10052-022-10437-3Explaining lepton-flavor non-universality and self-interacting dark matter with $$L_\mu -L_\tau $$ L μ - L τJulian Heeck0Anil Thapa1Department of Physics, University of VirginiaDepartment of Physics, University of VirginiaAbstract Experimental hints for lepton-flavor universality violation in the muon’s magnetic moment as well as neutral- and charged-current B-meson decays require Standard-Model extensions by particles such as leptoquarks that generically lead to unacceptably fast rates of charged lepton flavor violation and proton decay. We propose a model based on a gauged $$U(1)_{L_\mu -L_\tau }$$ U ( 1 ) L μ - L τ that eliminates all these unwanted decays by symmetry rather than finetuning and efficiently explains $$(g-2)_\mu $$ ( g - 2 ) μ , $$R_{K^{(*)}}$$ R K ( ∗ ) , $$R_{D^{(*)}}$$ R D ( ∗ ) , and neutrino masses. The $$U(1)_{L_\mu -L_\tau }$$ U ( 1 ) L μ - L τ furthermore acts as a stabilizing symmetry for dark matter and the light $$Z'$$ Z ′ gauge boson mediates velocity-dependent dark-matter self-interactions that resolve the small-scale structure problems. Lastly, even the Hubble tension can be ameliorated via the light $$Z'$$ Z ′ contribution to the relativistic degrees of freedom.https://doi.org/10.1140/epjc/s10052-022-10437-3 |
| spellingShingle | Julian Heeck Anil Thapa Explaining lepton-flavor non-universality and self-interacting dark matter with $$L_\mu -L_\tau $$ L μ - L τ European Physical Journal C: Particles and Fields |
| title | Explaining lepton-flavor non-universality and self-interacting dark matter with $$L_\mu -L_\tau $$ L μ - L τ |
| title_full | Explaining lepton-flavor non-universality and self-interacting dark matter with $$L_\mu -L_\tau $$ L μ - L τ |
| title_fullStr | Explaining lepton-flavor non-universality and self-interacting dark matter with $$L_\mu -L_\tau $$ L μ - L τ |
| title_full_unstemmed | Explaining lepton-flavor non-universality and self-interacting dark matter with $$L_\mu -L_\tau $$ L μ - L τ |
| title_short | Explaining lepton-flavor non-universality and self-interacting dark matter with $$L_\mu -L_\tau $$ L μ - L τ |
| title_sort | explaining lepton flavor non universality and self interacting dark matter with l mu l tau l μ l τ |
| url | https://doi.org/10.1140/epjc/s10052-022-10437-3 |
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