Dark matter in gauge mediation from emergent supersymmetry


We investigated the viability of neutralino dark matter in the gauge mediation from emergent super symmetry proposal. In this proposal, supersymmetry is broken at Planck scale and consequently, the gravitino is superheavy and completely decouples from the low energy theory. Squarks and sleptons obtain their soft masses dominantly through gauge mediation with other mechanisms highly suppressed. The lightest super symmetric partner, in contrast to traditional gauge mediation, is a neutralino which is also a dark matter candidate. By explicit calculation of the low energy spectra, the parameter space was constrained using the WMAP observed relic density of darkmatter, LEP2 Higgs mass bounds, collider bounds on supersymmetric partners and exotic B-meson decays. We found that the model has intriguing hybrid features such as a nearly gauge-mediated spectrum (the exception being the super heavy gravitino) but with a dominant mSUGRA-like bino-s tau coannihilation channel and at large tan beta, A-resonance-like annihilation.

supersymmetry phenomenology, cosmology of theories beyond the SM, Physics, Particles & Fields, Physics
Ng, S., Okada, N. (2007): Dark Matter in Gauge Mediation from Emergent Supersymmetry, Journal of High Energy Physics. DOI: https://doi.org/10.1088/1126-6708/2007/09/040