arXiv:0808.0829·v2·High Energy Physics — Phenomenology
A note on the primordial abundance of stau NLSPs
Michael Ratz🇩🇪 · Kai Schmidt-Hoberg🇩🇪 · Martin Wolfgang Winkler🇩🇪
Abstract
In scenarios with a gravitino LSP, there exist strong BBN constraints on the abundance of a possible stau NLSP. We find that in settings with substantial left-right mixing of the stau mass eigenstates these constraints can be evaded even for very long-lived staus.
Comments: 17 pages, 5 figures, discussion on vacuum stability added