Bonn 2010 – scientific programme

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T: Fachverband Teilchenphysik

T 24: Theoretische Astroteilchenphysik und Kosmologie II

T 24.4: Talk

Thursday, March 18, 2010, 17:30–17:45, HG XV

Embedding the DFSZ–Axino in mSUGRA with R–Parity Violation through Baryon Triality — •Herbi Dreiner and Branislav Poletanovic — Physikalisches Institut der Universität Bonn, Bethe Center for Theoretical Physics, Nußallee 12, 53115 Bonn, Germany

We embed the DFSZ axion in supersymmetry with broken R–parity. We restrict ourselves to the lepton–number violating case, which is motivated by the anomaly–free discrete gauge symmetry B₃. We present the Lagrangian and determine the axino interactions. In particular focusing on the mixing of the axino with the neutrinos and neutralinos. We keep the axino mass as a free parameter. In this model the axino can decay. We show the dominant decay processes as a function of the supersymmetric unification scale parameters, as well as the axino mass. We show implications for the axino as cold dark matter particle.