The B anomalies, the U 1 leptoquark and dark matter
Abstract The present-day B-anomalies involving b → sμ + μ − or b → cτ − ν ¯ $$ \overline{\nu} $$ transitions can all be explained with the addition of a vector U 1 leptoquark with a mass of M U 1 $$ {M}_{U_1} $$ ≳ 1.8 TeV. In the scalar singlet dark matter model (SSDMM), the DM is a scalar S that co...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-01-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP01(2023)041 |
| _version_ | 1797836674954166272 |
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| author | Geneviève Bélanger Jacky Kumar David London Alexander Pukhov |
| author_facet | Geneviève Bélanger Jacky Kumar David London Alexander Pukhov |
| author_sort | Geneviève Bélanger |
| collection | DOAJ |
| description | Abstract The present-day B-anomalies involving b → sμ + μ − or b → cτ − ν ¯ $$ \overline{\nu} $$ transitions can all be explained with the addition of a vector U 1 leptoquark with a mass of M U 1 $$ {M}_{U_1} $$ ≳ 1.8 TeV. In the scalar singlet dark matter model (SSDMM), the DM is a scalar S that couples to the Higgs via λ hS S 2 |H| 2. We update the fit to the data and find that the SSDMM is now viable only for M S ≳ 1.6 TeV. In this paper, we assume that the DM also couples to the U 1 via λ U 1 S S 2 U 1 μ † U 1 μ $$ {\lambda}_{U_1S}{S}^2{U}_{1\mu}^{\dagger }{U}_1^{\mu } $$ . In addition to leading to DM annihilation via SS → U 1 U ¯ 1 $$ {U}_1{\overline{U}}_1 $$ , this coupling generates SSgg and SSγγ couplings at one loop. Although naively divergent, these loop diagrams can be calculated under the assumption that the U 1 is a gauge boson of a group broken at the TeV scale. With this DM-U 1 coupling term, there are additional contributions to the various DM observables (relic density, direct and indirect detection). We find that the constraints on the SSDMM are relaxed for both heavy DM (M S ≳ M U 1 $$ {M}_{U_1} $$ ) and light DM (M S < M U 1 $$ {M}_{U_1} $$ ). |
| first_indexed | 2024-04-09T15:12:44Z |
| format | Article |
| id | doaj.art-4be5983575474194bbefa63f0e0489d3 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-09T15:12:44Z |
| publishDate | 2023-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-4be5983575474194bbefa63f0e0489d32023-04-30T11:03:49ZengSpringerOpenJournal of High Energy Physics1029-84792023-01-012023112010.1007/JHEP01(2023)041The B anomalies, the U 1 leptoquark and dark matterGeneviève Bélanger0Jacky Kumar1David London2Alexander Pukhov3LAPTh, CNRS, USMBPhysique des Particules, Université de MontréalPhysique des Particules, Université de MontréalSkobeltsyn Institute of Nuclear Physics, Moscow State UniversityAbstract The present-day B-anomalies involving b → sμ + μ − or b → cτ − ν ¯ $$ \overline{\nu} $$ transitions can all be explained with the addition of a vector U 1 leptoquark with a mass of M U 1 $$ {M}_{U_1} $$ ≳ 1.8 TeV. In the scalar singlet dark matter model (SSDMM), the DM is a scalar S that couples to the Higgs via λ hS S 2 |H| 2. We update the fit to the data and find that the SSDMM is now viable only for M S ≳ 1.6 TeV. In this paper, we assume that the DM also couples to the U 1 via λ U 1 S S 2 U 1 μ † U 1 μ $$ {\lambda}_{U_1S}{S}^2{U}_{1\mu}^{\dagger }{U}_1^{\mu } $$ . In addition to leading to DM annihilation via SS → U 1 U ¯ 1 $$ {U}_1{\overline{U}}_1 $$ , this coupling generates SSgg and SSγγ couplings at one loop. Although naively divergent, these loop diagrams can be calculated under the assumption that the U 1 is a gauge boson of a group broken at the TeV scale. With this DM-U 1 coupling term, there are additional contributions to the various DM observables (relic density, direct and indirect detection). We find that the constraints on the SSDMM are relaxed for both heavy DM (M S ≳ M U 1 $$ {M}_{U_1} $$ ) and light DM (M S < M U 1 $$ {M}_{U_1} $$ ).https://doi.org/10.1007/JHEP01(2023)041Particle Nature of Dark MatterSemi-Leptonic DecaysSpecific BSM Phenomenology |
| spellingShingle | Geneviève Bélanger Jacky Kumar David London Alexander Pukhov The B anomalies, the U 1 leptoquark and dark matter Journal of High Energy Physics Particle Nature of Dark Matter Semi-Leptonic Decays Specific BSM Phenomenology |
| title | The B anomalies, the U 1 leptoquark and dark matter |
| title_full | The B anomalies, the U 1 leptoquark and dark matter |
| title_fullStr | The B anomalies, the U 1 leptoquark and dark matter |
| title_full_unstemmed | The B anomalies, the U 1 leptoquark and dark matter |
| title_short | The B anomalies, the U 1 leptoquark and dark matter |
| title_sort | b anomalies the u 1 leptoquark and dark matter |
| topic | Particle Nature of Dark Matter Semi-Leptonic Decays Specific BSM Phenomenology |
| url | https://doi.org/10.1007/JHEP01(2023)041 |
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