Light Gaugino Problem in Direct Gauge Mediation
Yutaka Ookouchi
TL;DR
This paper reviews recent developments on the light gaugino problem in direct gauge mediation, where gaugino masses vanish at leading order due to the global vacuum structure in O'Raifeartaigh models.
Contribution
It provides an overview of the connection between gaugino mass suppression and the vacuum structure in SUSY-breaking models, highlighting recent insights.
Findings
Gaugino masses vanish at leading order in many models.
The global vacuum structure explains the light gaugino problem.
Recent theoretical progress clarifies this phenomenon.
Abstract
It has been known that in a wide class of direct gauge mediation models, the gaugino masses vanish at leading order in SUSY breaking. Recently, this phenomenon is understood in connection with the global structure of vacua in O'Raifeartaigh-type models. We review recent developments on this topic.
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