The new $(g-2)_\mu$ and Right-Handed Sneutrino Dark Matter
| Autor: | Jong Soo Kim, Daniel E. López-Fogliani, Andres D. Perez, Roberto Ruiz de Austri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Nuclear and High Energy Physics
High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) 010308 nuclear & particles physics Nuclear and particle physics. Atomic energy. Radioactivity 0103 physical sciences High Energy Physics::Phenomenology FOS: Physical sciences High Energy Physics::Experiment QC770-798 010306 general physics 01 natural sciences 7. Clean energy |
| Zdroj: | Nuclear Physics B, Vol 974, Iss, Pp 115637-(2022) Nuclear Physics |
| Popis: | In this paper we investigate the $(g-2)_\mu$ discrepancy in the context of the R-parity conserving next-to-minimal supersymmetric Standard Model plus right-handed neutrinos superfields. The model has the ability to reproduce neutrino physics data and includes the interesting possibility to have the right-handed sneutrino as the lightest supersymmetric particle and a viable dark matter candidate. Since right-handed sneutrinos are singlets, no new contributions for $\delta a_{\mu}$ with respect to the MSSM and NMSSM are present. However, the possibility to have the right-handed sneutrino as the lightest supersymmetric particle opens new ways to escape Large Hadron Collider and direct detection constraints. In particular, we find that dark matter masses within $10 \lesssim m_{\tilde{\nu}_{R}} \lesssim 600$ GeV are fully compatible with current experimental constraints. Remarkably, not only spectra with light sleptons are needed, but we obtain solutions with $m_{\tilde{\mu}} \gtrsim 600$ GeV in the entire dark matter mass range that could be probed by new $(g-2)_\mu$ data in the near future. In addition, dark matter direct detection experiments will be able to explore a sizable portion of the allowed parameter space with $m_{\tilde{\nu}_{R}} \lesssim 300$ GeV, while indirect detection experiments will be able to probe a much smaller fraction within $200 \lesssim m_{\tilde{\nu}_{R}} \lesssim 350$ GeV. Comment: Version published in Nucl. Phys. B. Discussions expanded, appendix B and references added. 29 pages, 9 figures, 2 tables. Analysis of the viability of RH sneutrino as dark matter carried out in arXiv:2102.08986 |
| Databáze: | OpenAIRE |
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