6533b86ffe1ef96bd12cdf93
RESEARCH PRODUCT
Cosmological promising parameters of stau in the minimal supersymmetric standard model
Masafumi KoikeToshifumi JittohTakashi ShimomuraJoe SatoKazunori KohriMasato Yamanakasubject
Nuclear physicsPhysicsNuclear and High Energy PhysicsParticle physicsNucleosynthesisHigh Energy Physics::PhenomenologyNeutralinoDark matterHigh Energy Physics::ExperimentAstronomy and AstrophysicsAstrophysics::Galaxy AstrophysicsAtomic and Molecular Physics and OpticsMinimal Supersymmetric Standard Modeldescription
We find that we can account for the possible descrepancy of the primordial abundance of 7 Li between the observation and the prediction of the Big-Bang Nucleosynthesis in a scenario of the Big-Bang Nucleosynthesis with the Minimal Supersymmetric Standard Model. This scenario is consistent with a stau-neutralino coannihilation scenario to explain the relic abundance of dark matter. The solution to the discrepancy is given by taking the values of parameters; the mass of the neutralino as 300 GeV and the mass difference between the stau and the neutralino as (100 – 120) MeV.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-07-30 |