Non-universal SUSY models, $$g_\mu -2$$ g μ - 2 , $$m_H$$ m H and dark matter
Abstract We study the anomalous magnetic moment of the muon, $$g_\mu - 2 \equiv 2 a_\mu $$ g μ - 2 ≡ 2 a μ , in the context of supersymmetric models beyond the CMSSM, where the unification of either the gaugino masses $$M_{1,2,3}$$ M 1 , 2 , 3 or sfermion and Higgs masses is relaxed, taking into acc...
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SpringerOpen
2024-10-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13499-7 |
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| author | John Ellis Keith A. Olive Vassilis C. Spanos |
| author_facet | John Ellis Keith A. Olive Vassilis C. Spanos |
| author_sort | John Ellis |
| collection | DOAJ |
| description | Abstract We study the anomalous magnetic moment of the muon, $$g_\mu - 2 \equiv 2 a_\mu $$ g μ - 2 ≡ 2 a μ , in the context of supersymmetric models beyond the CMSSM, where the unification of either the gaugino masses $$M_{1,2,3}$$ M 1 , 2 , 3 or sfermion and Higgs masses is relaxed, taking into account the measured mass of the Higgs boson, $$m_H$$ m H , the cosmological dark matter density and the direct detection rate. We find that the model with non-unified gaugino masses can make a contribution $$\Delta a_\mu \sim 20 \times 10^{-10}$$ Δ a μ ∼ 20 × 10 - 10 to the anomalous magnetic moment of the muon, for example if $$M_{1,2} \sim 600\; \textrm{GeV}$$ M 1 , 2 ∼ 600 GeV and $$M_3\sim 8 \; \textrm{TeV}$$ M 3 ∼ 8 TeV . The model with non-universal sfermion and Higgs masses can provide even larger $$\Delta a_\mu \sim 24 \times 10^{-10}$$ Δ a μ ∼ 24 × 10 - 10 if the sfermion masses for the first and the second generations are $$ \sim 400 \; \textrm{GeV}$$ ∼ 400 GeV and that of the third is $$ \sim 8 \; \textrm{TeV}$$ ∼ 8 TeV . We discuss the prospects for collider searches for supersymmetric particles in specific benchmark scenarios illustrating these possibilities, focusing in particular on the prospects for detecting the lighter smuon and the lightest neutralino. |
| format | Article |
| id | doaj-art-9bb8cbb5b89646139bcf6a8a6bb98d7e |
| institution | OA Journals |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-9bb8cbb5b89646139bcf6a8a6bb98d7e2025-08-20T02:20:38ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-10-01841012210.1140/epjc/s10052-024-13499-7Non-universal SUSY models, $$g_\mu -2$$ g μ - 2 , $$m_H$$ m H and dark matterJohn Ellis0Keith A. Olive1Vassilis C. Spanos2Theoretical Particle Physics and Cosmology Group, Department of Physics, King’s College LondonWilliam I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of MinnesotaWilliam I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of MinnesotaAbstract We study the anomalous magnetic moment of the muon, $$g_\mu - 2 \equiv 2 a_\mu $$ g μ - 2 ≡ 2 a μ , in the context of supersymmetric models beyond the CMSSM, where the unification of either the gaugino masses $$M_{1,2,3}$$ M 1 , 2 , 3 or sfermion and Higgs masses is relaxed, taking into account the measured mass of the Higgs boson, $$m_H$$ m H , the cosmological dark matter density and the direct detection rate. We find that the model with non-unified gaugino masses can make a contribution $$\Delta a_\mu \sim 20 \times 10^{-10}$$ Δ a μ ∼ 20 × 10 - 10 to the anomalous magnetic moment of the muon, for example if $$M_{1,2} \sim 600\; \textrm{GeV}$$ M 1 , 2 ∼ 600 GeV and $$M_3\sim 8 \; \textrm{TeV}$$ M 3 ∼ 8 TeV . The model with non-universal sfermion and Higgs masses can provide even larger $$\Delta a_\mu \sim 24 \times 10^{-10}$$ Δ a μ ∼ 24 × 10 - 10 if the sfermion masses for the first and the second generations are $$ \sim 400 \; \textrm{GeV}$$ ∼ 400 GeV and that of the third is $$ \sim 8 \; \textrm{TeV}$$ ∼ 8 TeV . We discuss the prospects for collider searches for supersymmetric particles in specific benchmark scenarios illustrating these possibilities, focusing in particular on the prospects for detecting the lighter smuon and the lightest neutralino.https://doi.org/10.1140/epjc/s10052-024-13499-7 |
| spellingShingle | John Ellis Keith A. Olive Vassilis C. Spanos Non-universal SUSY models, $$g_\mu -2$$ g μ - 2 , $$m_H$$ m H and dark matter European Physical Journal C: Particles and Fields |
| title | Non-universal SUSY models, $$g_\mu -2$$ g μ - 2 , $$m_H$$ m H and dark matter |
| title_full | Non-universal SUSY models, $$g_\mu -2$$ g μ - 2 , $$m_H$$ m H and dark matter |
| title_fullStr | Non-universal SUSY models, $$g_\mu -2$$ g μ - 2 , $$m_H$$ m H and dark matter |
| title_full_unstemmed | Non-universal SUSY models, $$g_\mu -2$$ g μ - 2 , $$m_H$$ m H and dark matter |
| title_short | Non-universal SUSY models, $$g_\mu -2$$ g μ - 2 , $$m_H$$ m H and dark matter |
| title_sort | non universal susy models g mu 2 g μ 2 m h m h and dark matter |
| url | https://doi.org/10.1140/epjc/s10052-024-13499-7 |
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