Gaugino radiative decay in an anomalous U(1)' model
arXiv:0905.4607 · doi:10.1016/j.nuclphysb.2010.01.023
Abstract
We study the neutralino radiative decay into the lightest supersymmetric particle (LSP) in the framework of a minimal anomalous U(1)' extension of the MSSM. It turns out that in a suitable decoupling limit the axino, which is present in the Stückelberg multiplet, is the LSP. We compute the branching ratio (BR) for the decay of a neutralino into an axino and a photon. We find that in a wide region of the parameter space, the BR is higher than 93% in contrast with the typical value (<=1%) in the CMSSM.
18 pages, 7 eps figures, feynmf, revised final version, published on Nucl. Phys. B
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- A Phenomenological study on the wino radiative decay in anomalous models
- Phenomenological analysis of D-brane Pati-Salam vacua
- Supersymmetry Breaking in a Minimal Anomalous Extension of the MSSM
- Asymmetry at LHC for an U(1)' anomalous extension of MSSM
- Anomalous U(1) and Asymmetry