The Gravitino-Stau Scenario after Catalyzed BBN

Details The Gravitino-Stau Scenario after Catalyzed BBN The Gravitino-Stau Scenario after Catalyzed BBN

2007-10-24

arxiv.org/abs/0710.4528v2

JCAP 0801:011,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

1+14 pages, 6 figures; v2: minor clarifications, 1 reference added, matches version to appear in JCAP

Scientific paper

10.1088/1475-7516/2008/01/011

We consider the impact of Catalyzed Big Bang Nucleosynthesis on theories with a gravitino LSP and a charged slepton NLSP. In models where the gravitino to gaugino mass ratio is bounded from below, such as gaugino-mediated SUSY breaking, we derive a lower bound on the gaugino mass parameter m_1/2. As a concrete example, we determine the parameter space of gaugino mediation that is compatible with all cosmological constraints.

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