Interplay of $95$ GeV Diphoton Excess and Dark Matter in Supersymmetric Triplet Model
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2025
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| _version_ | 1866913825127661568 |
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| author | Li, Zetian Liu, Ning Zhu, Bin |
| author_facet | Li, Zetian Liu, Ning Zhu, Bin |
| contents | The decay of the Higgs boson and the nature of dark matter remain fundamental challenges in particle physics. We investigate the $95$ GeV diphoton excess and dark matter within the framework of the triplet-extended Minimal Supersymmetric Standard Model (TMSSM). In this model, an additional Hypercharge $Y=0$, $SU(2)_L$ triplet superfield is introduced. Mixing between the triplet and doublet Higgs states enhances the diphoton signal strength of the $95$ GeV Higgs boson, resulting in $μ_{γγ}^{\text{CMS+ATLAS}} = 0.24_{-0.08}^{+0.09}$, which is consistent with experimental observations. This enhancement arises primarily from charged Higgs loop contributions. Additionally, the model accommodates viable dark matter candidates in the form of a bino-dominated neutralino. The relic density is reduced to the observed value through resonance-enhanced annihilation via the Higgs portal or co-annihilation with the triplino or higgsino. This reduction remains consistent with constraints from direct and indirect detection experiments. A comprehensive parameter scan demonstrates that the TMSSM can simultaneously explain the $95$ GeV diphoton excess, the observed $125$ GeV Higgs mass, and the dark matter relic density, establishing a compelling and theoretically consistent framework. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_21273 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Interplay of $95$ GeV Diphoton Excess and Dark Matter in Supersymmetric Triplet Model Li, Zetian Liu, Ning Zhu, Bin High Energy Physics - Phenomenology The decay of the Higgs boson and the nature of dark matter remain fundamental challenges in particle physics. We investigate the $95$ GeV diphoton excess and dark matter within the framework of the triplet-extended Minimal Supersymmetric Standard Model (TMSSM). In this model, an additional Hypercharge $Y=0$, $SU(2)_L$ triplet superfield is introduced. Mixing between the triplet and doublet Higgs states enhances the diphoton signal strength of the $95$ GeV Higgs boson, resulting in $μ_{γγ}^{\text{CMS+ATLAS}} = 0.24_{-0.08}^{+0.09}$, which is consistent with experimental observations. This enhancement arises primarily from charged Higgs loop contributions. Additionally, the model accommodates viable dark matter candidates in the form of a bino-dominated neutralino. The relic density is reduced to the observed value through resonance-enhanced annihilation via the Higgs portal or co-annihilation with the triplino or higgsino. This reduction remains consistent with constraints from direct and indirect detection experiments. A comprehensive parameter scan demonstrates that the TMSSM can simultaneously explain the $95$ GeV diphoton excess, the observed $125$ GeV Higgs mass, and the dark matter relic density, establishing a compelling and theoretically consistent framework. |
| title | Interplay of $95$ GeV Diphoton Excess and Dark Matter in Supersymmetric Triplet Model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.21273 |