Flavour Violation in Anomaly Mediated Supersymmetry Breaking
Abstract
We study squark flavour violation in the anomaly mediated supersymmetry broken (AMSB) minimal supersymmetric standard model. Analytical expressions for the three-generational squark mass matrices are derived. We show that the anomaly-induced soft breaking terms have a decreasing amount of squark flavour violation when running from the GUT to the weak scale. Taking into account inter-generational squark mixing, we work out non-trivial constraints from B -> Xs gamma and Bs -> mu mu, which complement each other, as well as B -> tau nu decays. We further identify a region of parameter space where the anomalous magnetic moment of the muon and the B -> Xs gamma branching ratio are simultaneously accommodated. Since anomaly mediation is of the minimal flavour-violating type, the generic flavour predictions for this class of models apply, including a CKM-induced (and hence small) Bs-Bsbar-mixing phase.
Keywords
Cite
@article{arxiv.0902.4880,
title = {Flavour Violation in Anomaly Mediated Supersymmetry Breaking},
author = {B. C. Allanach and G. Hiller and D. R. T. Jones and P. Slavich},
journal= {arXiv preprint arXiv:0902.4880},
year = {2010}
}
Comments
32 pages, 8 figures. v2: minor clarifications, reference added, to appear in JHEP