Aspects of non-minimal gauge mediation
Abstract
A large class of non-minimal gauge mediation models, such as (semi-)direct gauge mediation, predict a hierarchy between the masses of the supersymmetric standard model gauginos and those of scalar particles. We perform a comprehensive study of these non-minimal gauge mediation models, including mass calculations in semi-direct gauge mediation, to illustrate these features, and discuss the phenomenology of the models. We point out that the cosmological gravitino problem places stringent constraints on mass splittings, when the Bino is the NLSP. However, the GUT relation of the gaugino masses is broken unlike the case of minimal gauge mediation, and an NLSP other than the Bino (especially the gluino NLSP) becomes possible, relaxing the cosmological constraints. We also discuss the collider signals of the models.
Additional Information
© 2010 SISSA. Received: 22 April 2010; Accepted: 28 May 2010; Published online: 15 June 2010. S. S. and K. Y. would like to thank E. Nakamura, K. Hamaguchi, R. Sato and T. T. Yanagida for useful discussions. This work is supported in part by JSPS Research Fellowships for Young Scientists and by World Premier International Research Center Initiative, MEXT, Japan. M. Y. is also supported in part by DOE grant DE-FG03-92- ER40701 and Global COE Program for Physical Sciences Frontier at the University of Tokyo, MEXT, Japan.Additional details
- Eprint ID
- 19268
- Resolver ID
- CaltechAUTHORS:20100803-155427173
- Japan Society for the Promotion of Science (JSPS)
- World Premier International Research Center Initiative, MEXT, Japan
- DE-FG03-92-ER40701
- Department of Energy (DOE)
- University of Tokyo, MEXT, Japan
- Created
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2010-08-03Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field