Flavorful hybrid anomaly-gravity mediation

Journal Article · Sun May 01 04:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.095015· OSTI ID:21541643

Gross, Christian; Hiller, Gudrun ^[1]

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1. Institut fuer Physik, Technische Universitaet Dortmund, D-44221 Dortmund (Germany)

We consider supersymmetric models where anomaly and gravity mediation give comparable contributions to the soft terms and discuss how this can be realized in a five-dimensional brane world. The gaugino mass pattern of anomaly mediation is preserved in such a hybrid setup. The flavorful gravity-mediated contribution cures the tachyonic slepton problem of anomaly mediation. The supersymmetric flavor puzzle is solved by alignment. We explicitly show how a working flavor-tachyon link can be realized with Abelian flavor symmetries and give the characteristic signatures of the framework, including O(1) slepton mass splittings between different generations and between doublets and singlets. This provides opportunities for same flavor dilepton edge measurements with missing energy at the Large Hadron Collider (LHC). Rare lepton decay rates could be close to their current experimental limit. Compared to pure gravity mediation, the hybrid model is advantageous because it features a heavy gravitino which can avoid the cosmological gravitino problem of gravity-mediated models combined with leptogenesis.

• OSTI ID: 21541643
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BRANES
CERN LHC
COMPOSITE MODELS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FLAVOR MODEL
GRAVITATION
LEPTONS
MANY-DIMENSIONAL CALCULATIONS
MASS
MATHEMATICAL MODELS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PRODUCTION
POSTULATED PARTICLES
QUARK MODEL
SIMULATION
STORAGE RINGS
SUPERSYMMETRY
SYMMETRY
SYNCHROTRONS
TACHYONS