Big-Bang Nucleosynthesis with Long-Lived Charged Slepton

Kawasaki, Masahiro; Kohri, Kazunori; Moroi, Takeo

Big-Bang Nucleosynthesis with Long-Lived Charged Slepton

Authors

Kawasaki, Masahiro

Kohri, Kazunori

Moroi, Takeo

Description

We consider constraints on long-lived charged scalar leptons \tilde{l}^\pm in supersymmetric models, where gravitino is the lightest superparticle. We study the decay and hadronization processes of \tilde{l}^\pm. We also take into account the significant enhancement of Li6 production due to the formation of the bound-state (He4 \tilde{l}^-); for this purpose, we use the reaction rate given by the most recent calculation based on coupled-channel method.
9 pages, 3 figures