2011/04/30 by Lorenzo Calibbi, Toshihiko Ota, Yasutaka Takanishi · 1 citation
Physics and Astronomy · #Collider #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Higgs boson #Large Hadron Collider #Minimal Supersymmetric Standard Model #Neutralino #Nuclear physics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Standard Model (mathematical formulation) #Statistics #Supersymmetry #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep07(2011)013
published as JHEP 1107:013,2011 · 25 pages, 9 figures; discussion improved, typos corrected, references added; version accepted for publication in JHEP
arxiv created 2011/06/16 · openalex publication_date 2011/07/01 · arxiv updated 2015/03/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the constraints to the light neutralino dark matter scenario in the minimal supersymmetric standard model from available experimental observations such as decays of B and K meson, relic dark matter abundance, and the search for neutralino and Higgs production at colliders. We find that two regions of the MSSM parameter space fulfill all the constraints: a fine-tuned strip with large tan beta where the lightest neutralino can be as light as 8 GeV, and a low tan beta region providing a neutralino mass larger than 16 GeV. The large tan beta strip, which can be compatible with recently reported signals from direct detection experiments, can be fully tested by means of low-energy observables and, in particular, by Bs -> mu mu and Higgs bosons searches at the LHC within the upcoming months.