Muon $$\mathbf {g-2}$$ g - 2 , neutralino dark matter and stau NLSP
Abstract We explore the implications of resolving the muon $$g-2$$ g - 2 anomaly in a $$SU(4)_c \times SU(2)_L \times SU(2)_R$$ S U ( 4 ) c × S U ( 2 ) L × S U ( 2 ) R model, where the soft supersymmetry breaking scalar and gaugino masses break the left-right (LR) symmetry. A 2 $$\sigma $$ σ resolut...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2022-06-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-10507-6 |
| _version_ | 1811230778234765312 |
|---|---|
| author | Mario E. Gómez Qaisar Shafi Amit Tiwari Cem Salih Ün |
| author_facet | Mario E. Gómez Qaisar Shafi Amit Tiwari Cem Salih Ün |
| author_sort | Mario E. Gómez |
| collection | DOAJ |
| description | Abstract We explore the implications of resolving the muon $$g-2$$ g - 2 anomaly in a $$SU(4)_c \times SU(2)_L \times SU(2)_R$$ S U ( 4 ) c × S U ( 2 ) L × S U ( 2 ) R model, where the soft supersymmetry breaking scalar and gaugino masses break the left-right (LR) symmetry. A 2 $$\sigma $$ σ resolution of the anomaly requires relatively light sleptons, chargino and LSP neutralino. The stau turns out to be the NLSP of mass $$m_{\tilde{\tau }}\lesssim 400$$ m τ ~ ≲ 400 GeV, and the sleptons from the first two families can be as heavy as about 800 GeV. The chargino is also required to be lighter than about 600 GeV to accommodate the muon $$g-2$$ g - 2 solutions consistent with the dark matter relic density constraint. The dominant right-handed nature of the light slepton states suppress the sensitivity of possible signals which can be probed in Run3 experiments at the LHC. We also discuss the impact of accommodating the Higgs boson mass and the vacuum stability of the scalar potential for these solutions. Although a light stau can be compatible with the stability of the scalar potential, the Higgs boson mass constraint has a strong impact on the solutions with $$\tan \beta $$ tan β bounded from above, namely $$\tan \beta \lesssim 20$$ tan β ≲ 20 . The Higgsinos are heavier than about 4 TeV, and the LSP neutralino has the correct relic density if it is Bino-like. We identify stau–neutralino coannihilation as the dominant mechanism for realizing the desired dark matter relic density, with sneutrino–neutralino coannihiliation playing a minor role. These bino-like dark matter solutions can yield a spin-independent scattering cross-section on the order of $$10^{-13}$$ 10 - 13 pb which hopefully, can be expected to be tested in the near future. |
| first_indexed | 2024-04-12T10:33:47Z |
| format | Article |
| id | doaj.art-87b65f876f8148c097603a08f35c40b8 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-12T10:33:47Z |
| publishDate | 2022-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-87b65f876f8148c097603a08f35c40b82022-12-22T03:36:46ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-06-0182612310.1140/epjc/s10052-022-10507-6Muon $$\mathbf {g-2}$$ g - 2 , neutralino dark matter and stau NLSPMario E. Gómez0Qaisar Shafi1Amit Tiwari2Cem Salih Ün3Departamento de Ciencias Integradas y Centro de Estudios Avanzados en Física Matemáticas y Computación, Campus del Carmen, Universidad de HuelvaDepartment of Physics and Astronomy, University of DelawareDepartment of Physics, Bursa Uludag̃ UniversityDepartamento de Ciencias Integradas y Centro de Estudios Avanzados en Física Matemáticas y Computación, Campus del Carmen, Universidad de HuelvaAbstract We explore the implications of resolving the muon $$g-2$$ g - 2 anomaly in a $$SU(4)_c \times SU(2)_L \times SU(2)_R$$ S U ( 4 ) c × S U ( 2 ) L × S U ( 2 ) R model, where the soft supersymmetry breaking scalar and gaugino masses break the left-right (LR) symmetry. A 2 $$\sigma $$ σ resolution of the anomaly requires relatively light sleptons, chargino and LSP neutralino. The stau turns out to be the NLSP of mass $$m_{\tilde{\tau }}\lesssim 400$$ m τ ~ ≲ 400 GeV, and the sleptons from the first two families can be as heavy as about 800 GeV. The chargino is also required to be lighter than about 600 GeV to accommodate the muon $$g-2$$ g - 2 solutions consistent with the dark matter relic density constraint. The dominant right-handed nature of the light slepton states suppress the sensitivity of possible signals which can be probed in Run3 experiments at the LHC. We also discuss the impact of accommodating the Higgs boson mass and the vacuum stability of the scalar potential for these solutions. Although a light stau can be compatible with the stability of the scalar potential, the Higgs boson mass constraint has a strong impact on the solutions with $$\tan \beta $$ tan β bounded from above, namely $$\tan \beta \lesssim 20$$ tan β ≲ 20 . The Higgsinos are heavier than about 4 TeV, and the LSP neutralino has the correct relic density if it is Bino-like. We identify stau–neutralino coannihilation as the dominant mechanism for realizing the desired dark matter relic density, with sneutrino–neutralino coannihiliation playing a minor role. These bino-like dark matter solutions can yield a spin-independent scattering cross-section on the order of $$10^{-13}$$ 10 - 13 pb which hopefully, can be expected to be tested in the near future.https://doi.org/10.1140/epjc/s10052-022-10507-6 |
| spellingShingle | Mario E. Gómez Qaisar Shafi Amit Tiwari Cem Salih Ün Muon $$\mathbf {g-2}$$ g - 2 , neutralino dark matter and stau NLSP European Physical Journal C: Particles and Fields |
| title | Muon $$\mathbf {g-2}$$ g - 2 , neutralino dark matter and stau NLSP |
| title_full | Muon $$\mathbf {g-2}$$ g - 2 , neutralino dark matter and stau NLSP |
| title_fullStr | Muon $$\mathbf {g-2}$$ g - 2 , neutralino dark matter and stau NLSP |
| title_full_unstemmed | Muon $$\mathbf {g-2}$$ g - 2 , neutralino dark matter and stau NLSP |
| title_short | Muon $$\mathbf {g-2}$$ g - 2 , neutralino dark matter and stau NLSP |
| title_sort | muon mathbf g 2 g 2 neutralino dark matter and stau nlsp |
| url | https://doi.org/10.1140/epjc/s10052-022-10507-6 |
| work_keys_str_mv | AT marioegomez muonmathbfg2g2neutralinodarkmatterandstaunlsp AT qaisarshafi muonmathbfg2g2neutralinodarkmatterandstaunlsp AT amittiwari muonmathbfg2g2neutralinodarkmatterandstaunlsp AT cemsalihun muonmathbfg2g2neutralinodarkmatterandstaunlsp |