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The spectrum of goldstini and modulini

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Abstract

When supersymmetry is broken in multiple sectors via independent dynamics, the theory furnishes a corresponding multiplicity of “goldstini” degrees of freedom which may play a substantial role in collider phenomenology and cosmology. In this paper, we explore the tree-level mass spectrum of goldstini arising from a general admixture of F -term, D -term, and almost no-scale supersymmetry breaking, employing non-linear superfields and a novel gauge fixing for supergravity discussed in a companion paper. In theories of F -term and D -term breaking, goldstini acquire a mass which is precisely twice the gravitino mass, while the inclusion of no-scale breaking renders one of these modes, the modulino, massless. We argue that the vanishing modulino mass can be explained in terms of an accidental and spontaneously broken “global” supersymmetry.

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Authors and Affiliations

  1. Berkeley Center for Theoretical Physics, University of California, Berkeley, CA, 94720, U.S.A.

    Clifford Cheung

  2. Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, U.S.A.

    Clifford Cheung

  3. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, U.S.A.

    Francesco D’Eramo & Jesse Thaler

Authors
  1. Clifford Cheung
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  2. Francesco D’Eramo
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  3. Jesse Thaler
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Correspondence to Jesse Thaler.

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ArXiv ePrint:1104.2600

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Cheung, C., D’Eramo, F. & Thaler, J. The spectrum of goldstini and modulini. J. High Energ. Phys. 2011, 115 (2011). https://doi.org/10.1007/JHEP08(2011)115

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  • DOI: https://doi.org/10.1007/JHEP08(2011)115

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