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Aspects of non-minimal gauge mediation

Shirai, Satoshi and Yamazaki, Masahito and Yonekura, Kazuya (2010) Aspects of non-minimal gauge mediation. Journal of High Energy Physics, 6 . Art. No. 056. ISSN 1126-6708.

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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.

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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.
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
World Premier International Research Center Initiative, MEXT, JapanUNSPECIFIED
Department of Energy (DOE)DE-FG03-92-ER40701
University of Tokyo, MEXT, JapanUNSPECIFIED
Subject Keywords:Supersymmetry Phenomenology
Record Number:CaltechAUTHORS:20100803-155427173
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19268
Deposited By: Tony Diaz
Deposited On:03 Aug 2010 23:02
Last Modified:03 Oct 2019 01:54

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