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Mixed gauge and anomaly mediation from new physics at 10 TeV

Ken Hsieh and Markus A. Luty

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In the context of anomaly-mediated supersymmetry breaking, it is natural for vectorlike fields and singlets to have supersymmetry breaking masses of order 10 TeV, and therefore act as messengers of supersymmetry breaking. We show that this can give rise to phenomenologically viable spectra compatible with perturbative gauge coupling unification. The minimal model interpolates continuously between pure anomaly mediation and gauge mediation with a messenger scale of order 10 TeV. It is also possible to have non-minimal models with more degenerate specta, with some squarks lighter than sleptons. These models reduce to the MSSM at low energies and incorporate a natural solution of the μ problem. The minimal model has four continuous parameters and one discrete parameter (the number of messengers). The LEP Higgs mass bound can be satisfied in the minimal model by tuning parameters at the GUT scale to one part in 50.

Keywords

Supersymmetry Breaking

Supersymmetry Phenomenology

 

E-print Number: hep-ph/0604256

Cited: by |

Refers: to

PACS

11.30.Qc Spontaneous and radiative symmetry breaking

14.80.Ly Supersymmetric partners of known particles

12.60.Jv Supersymmetric models

12.10.Kt Unification of couplings; mass relations

11.30.Pb Supersymmetry

Subjects

Particle physics and field theory

Dates

Issue 06 (June 2007)

Received 1 April 2007, accepted for publication 15 June 2007

Published 18 June 2007



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