Radiative corrections to the direct detection of the Higgsino-(and Wino-)like neutralino dark matter: Spin-dependent interactions
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866912294308413440 |
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| author | Bisal, Subhadip Chatterjee, Arindam Das, Debottam Pasha, Syed Adil |
| author_facet | Bisal, Subhadip Chatterjee, Arindam Das, Debottam Pasha, Syed Adil |
| contents | The lightest neutralino ($\tildeχ_1^0$) is a promising dark matter (DM) candidate in the R-parity conserving minimal supersymmetric standard model (MSSM). In this work, we focus on dominantly Higgsino-like and Wino-like $\tildeχ_1^0$ DM, with small admixtures of gauginos and Higgsinos, respectively. In particular, we explore large one-loop corrections to the $\tildeχ_1^0 \tildeχ_1^0Z$ vertex, which can significantly affect the estimation of the spin-dependent $\tildeχ_1^0$-nucleon scattering cross-section in the regions where such DM candidates are viable. We have used the on-shell renormalization scheme to estimate the relevant counterterm contributions. In the parameter region where $\tildeχ_1^0$ is dominantly Higgsino-like, the radiative corrections (including the contributions from the respective counterterms) are substantial and can enhance the $\tildeχ_1^0\tildeχ_1^0Z$ vertex by up to $\sim 120\%$ for the benchmark scenarios we have considered. Further, for an almost pure Wino-like $\tildeχ_1^0$, the increment in the $\tildeχ_1^0\tildeχ_1^0Z$ vertex is up to $15\%$. The corresponding cross-sections with the proton and the neutron can be changed by up to about $50\%$. In addition, including the electroweak box diagrams, the cross-sections can be significantly enhanced, in particular, for the Wino-like $\tildeχ_1^0$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_18205 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Radiative corrections to the direct detection of the Higgsino-(and Wino-)like neutralino dark matter: Spin-dependent interactions Bisal, Subhadip Chatterjee, Arindam Das, Debottam Pasha, Syed Adil High Energy Physics - Phenomenology The lightest neutralino ($\tildeχ_1^0$) is a promising dark matter (DM) candidate in the R-parity conserving minimal supersymmetric standard model (MSSM). In this work, we focus on dominantly Higgsino-like and Wino-like $\tildeχ_1^0$ DM, with small admixtures of gauginos and Higgsinos, respectively. In particular, we explore large one-loop corrections to the $\tildeχ_1^0 \tildeχ_1^0Z$ vertex, which can significantly affect the estimation of the spin-dependent $\tildeχ_1^0$-nucleon scattering cross-section in the regions where such DM candidates are viable. We have used the on-shell renormalization scheme to estimate the relevant counterterm contributions. In the parameter region where $\tildeχ_1^0$ is dominantly Higgsino-like, the radiative corrections (including the contributions from the respective counterterms) are substantial and can enhance the $\tildeχ_1^0\tildeχ_1^0Z$ vertex by up to $\sim 120\%$ for the benchmark scenarios we have considered. Further, for an almost pure Wino-like $\tildeχ_1^0$, the increment in the $\tildeχ_1^0\tildeχ_1^0Z$ vertex is up to $15\%$. The corresponding cross-sections with the proton and the neutron can be changed by up to about $50\%$. In addition, including the electroweak box diagrams, the cross-sections can be significantly enhanced, in particular, for the Wino-like $\tildeχ_1^0$. |
| title | Radiative corrections to the direct detection of the Higgsino-(and Wino-)like neutralino dark matter: Spin-dependent interactions |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.18205 |