RT Journal Article
T1 Muon g − 2, neutralino dark matter and stau NLSP
A1 Gómez Santamaría, Mario Emilio
A1 Shafi, Qaisar
A1 Tiwari, Amit
A1 Ün, Cem Salih
AB We explore the implications of resolving the muon g-2 anomaly in a SU(4)c×SU(2)L×SU(2)R model, where the soft supersymmetry breaking scalar and gaugino masses break the left-right (LR) symmetry. A 2s resolution of the anomaly requires relatively light sleptons, chargino and LSP neutralino. The stau turns out to be the NLSP of mass mt~?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 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 tanß bounded from above, namely tanß?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 10-13pb which hopefully, can be expected to be tested in the near future.
PB Springer
SN 1434-6044
SN 1434-6052 (electrónico)
YR 2022
FD 2022
LK https://hdl.handle.net/10272/21672
UL https://hdl.handle.net/10272/21672
LA eng
NO Gómez, M.E., Shafi, Q., Tiwari, A. et al. Muon g−2 , neutralino dark matter and stau NLSP. Eur. Phys. J. C 82, 561 (2022). https://doi.org/10.1140/epjc/s10052-022-10507-6
NO This work is supported in part by the UnitedStates Department of Energy grant DE-SC0013880 (QS and AT). Theresearch of MEG and CSU is supported in part by the Spanish MICINN,under grant PID2019-107844GB-C22. We acknowledge InformationTechnologies (IT) resources at the University Of Delaware, specificallythe high performance computing resources for the calculation of resultspresented in this paper
DS Repositorio Institucional de la Universidad de Huelva
RD 15 jun 2026