Landscape of supersymmetric particle mass hierarchies in deflected mirage mediation
Department of Physics, Northeastern University, MA 02115, Boston, USA
2 Department of Physics, University of Wisconsin, WI 53706, Madison, USA
3 Department of Physics, University of Michigan, MI 48109, Ann Arbor, USA
Accepted: 17 November 2011
Published online: 19 January 2012
With the aim of uncovering viable regions of parameter space in deflected mirage mediation (DMM) models of supersymmetry breaking, we study the landscape of particle mass hierarchies for the lightest four non-Standard Model states for DMM models and compare the results to that of minimal supergravity/constrained MSSM (mSUGRA/CMSSM) models, building on previous studies of Feldman, Liu, and Nath. Deflected mirage mediation is a string-motivated scenario in which the soft terms include comparable contributions from gravity mediation, gauge mediation, and anomaly mediation. DMM allows a wide variety of phenomenologically preferred models with light charginos and neutralinos, including novel patterns in which the heavy Higgs particles are lighter than the lightest superpartner. We use this analysis to motivate two DMM benchmark points to be used for more detailed collider studies. One model point has a higgsino-dominated lightest superpartner and a compressed yet heavy spectrum, while the other has a stau NLSP and similar features to mSUGRA/CMSSM models, but with a slightly less stretched spectrum.
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2012