Gaugino screening, the absence of next-to-leading order corrections to gaugino masses, is a generic feature of gauge mediation models of supersymmetry breaking. We show that in a specific class of models, known as semi-direct gauge mediation, it is possible to avoid gaugino screening by allowing for a chiral messenger sector. Messengers then acquire a mass at some scale, for instance by higgsing or by some auxiliary strong coupling dynamics. We implement this idea in a simple model which we work out explicitly.
|Titolo:||Unscreening the Gaugino Mass with Chiral Messengers|
|Autori:||ARGURIO R; BERTOLINI M; FERRETTI G; MARIOTTI A|
|Data di pubblicazione:||2010|
|Digital Object Identifier (DOI):||10.1007/JHEP12(2010)064|
|Appare nelle tipologie:||1.1 Journal article|