Big-bang nucleosynthesis through bound-state effects with a long-lived slepton in the NMSSM

Kazunori Kohri, Masafumi Koike, Yasufumi Konishi +5

We show that the Li problems can be solved in the next-to-minimal supersymmetric standard model where the slepton as the next-to-lightest SUSY particle is very long-lived. Such a l…