Unscreening the Gaugino Mass with Chiral Messengers

Details Unscreening the Gaugino Mass with Chiral Messengers Unscreening the Gaugino Mass with Chiral Messengers

2010-06-28

arxiv.org/abs/1006.5465v2

JHEP 1012:064,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 3 figures. Minor clarifications added in Section 2, version to appear in JHEP

Scientific paper

10.1007/JHEP12(2010)064

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.

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