When Anomaly Mediation is UV Sensitive

Details When Anomaly Mediation is UV Sensitive When Anomaly Mediation is UV Sensitive

2010-08-23

arxiv.org/abs/1008.3774v2

JHEP 1106:137,2011

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 1 figure (version to appear in JHEP)

Scientific paper

10.1007/JHEP06(2011)137

Despite its successes---such as solving the supersymmetric flavor problem---anomaly mediated supersymmetry breaking is untenable because of its prediction of tachyonic sleptons. An appealing solution to this problem was proposed by Pomarol and Rattazzi where a threshold controlled by a light field deflects the anomaly mediated supersymmetry breaking trajectory, thus evading tachyonic sleptons. In this paper we examine an alternate class of deflection models where the non-supersymmetric threshold is accompanied by a heavy, instead of light, singlet. The low energy form of this model is the so-called extended anomaly mediation proposed by Nelson and Weiner, but with potential for a much higher deflection threshold. The existence of this high deflection threshold implies that the space of anomaly mediated supersymmetry breaking deflecting models is larger than previously thought.

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