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FIELD Phys:Particle Physics
DATE May 24 (Thu), 2018
TIME 16:00-17:30
PLACE 8101
SPEAKER Joe Sato
HOST Nomura, Takaaki
INSTITUTE Saitama University
TITLE Big-bang nucleosynthesis and Leptogenesis in CMSSM
ABSTRACT

We have investigated the constrained minimal supersymmetric standard model with three right-handed Majorana neutrinos whether there still is a parameter region which is consistent with all existing experimental data/limits such as Leptogenesis and the dark matter abundance and we also can solve the Lithium problem. Using Casas-Ibarra parameterization, we have found that a very narrow parameter space of the complex orthogonal matrix elements where the lightest slepton can have a long lifetime, that is necessary for solving the Lithium problem.

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