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Cheung, Clifford and Nomura, Yasunori and Thaler, Jesse (2010) Goldstini. Journal of High Energy Physics, 2010 (3). Art. No. 73. ISSN 1029-8479.

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Supersymmetric phenomenology has been largely bound to the hypothesis that supersymmetry breaking originates from a single source. In this paper, we relax this underlying assumption and consider a multiplicity of sectors which independently break supersymmetry, thus yielding a corresponding multiplicity of goldstini. While one linear combination of goldstini is eaten via the super-Higgs mechanism, the orthogonal combinations remain in the spectrum as physical degrees of freedom. Interestingly, supergravity effects induce a universal tree-level mass for the goldstini which is exactly twice the gravitino mass. Since visible sector fields can couple dominantly to the goldstini rather than the gravitino, this framework allows for substantial departures from conventional supersymmetric phenomenology. In fact, this even occurs when a conventional mediation scheme is augmented by additional supersymmetry breaking sectors which are fully sequestered. We discuss a number of striking collider signatures, including various novel decay modes for the lightest observable-sector supersymmetric particle, gravitinoless gauge-mediated spectra, and events with multiple displaced vertices. We also describe goldstini cosmology and the possibility of goldstini dark matter.

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Additional Information:This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. Received: February 18, 2010. Accepted: February 28, 2010. Published: March 15, 2010. We thank N. Arkani-Hamed, A. Arvanitaki, N. Craig, S. Dimopoulos, D. Freedman, M. Schmaltz, and D. Shih for interesting discussions. The work of C.C. and Y.N. was supported in part by the Director, Office of Science, Office of High Energy and Nuclear Physics, of the US Department of Energy under Contract DE-AC02-05CH11231, and in part by the National Science Foundation under grants PHY-0555661 and PHY-0855653. J.T. is supported by the U.S. Department of Energy under cooperative research agreement DE-FG0205ER41360.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-05CH11231
Department of Energy (DOE)DE-FG02-05ER41360
Subject Keywords:Supersymmetry Breaking, Supersymmetric Effective Theories, Supergravity Models
Issue or Number:3
Record Number:CaltechAUTHORS:20190619-094159232
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Official Citation:Cheung, C., Nomura, Y. & Thaler, J. J. High Energ. Phys. (2010) 2010: 73.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96538
Deposited By: George Porter
Deposited On:19 Jun 2019 22:14
Last Modified:03 Oct 2019 21:23

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