Eur. Phys. J. C (2008) 56: 287-291
https://doi.org/10.1140/epjc/s10052-008-0650-2

Regular Article - Theoretical Physics

CBBN in the CMSSM

Max-Planck-Institut für Physik, Föhringer Ring 6, 80805, Munich, Germany

^* e-mail: jpradler@mppmu.mpg.de

Received: 16 February 2008
Revised: 23 May 2008
Published online: 8 July 2008

Abstract

Catalyzed big bang nucleosynthesis (CBBN) can lead to overproduction of ⁶Li in gravitino dark matter scenarios in which the lighter stau is the lightest standard model superpartner. Based on a treatment using the state-of-the-art result for the catalyzed ⁶Li production cross section, we update the resulting constraint within the framework of the constrained minimal supersymmetric standard model (CMSSM). We confront our numerical findings with recently derived limits on the gaugino mass parameter m_1/2 and the reheating temperature T_R.