Sequestered gravity in gauge mediation

Ignatios Antoniadis (1, 2) , Karim Benakli (1) , Mariano Quiros (3, 4, 5)

1 LPTHE - Laboratoire de Physique Théorique et Hautes Energies
2 Albert Einstein Center for Fundamental Physics
3 ECM, UB - Departament ECM, Facultat de Física, Universitat de Barcelona and Institut de Fisica d'Altes Energies
4 ICREA - Institució Catalana de Recerca i Estudis Avançats = Catalan Institution for Research and Advanced Studies
5 UNESP - Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University

We present a novel mechanism of supersymme-try breaking embeddable in string theory and simultaneously sharing the main advantages of (sequestered) gravity and gauge mediation. It is driven by a Scherk–Schwarz deformation along a compact extra dimension, transverse to a brane stack supporting the supersymmetric extension of the Standard Model. This fixes the magnitude of the gravitino mass, together with that of the gauginos of a bulk gauge group, at a scale as high as 10 10 GeV. Supersymmetry breaking is mediated to the observable sector dominantly by gauge interactions using massive messengers transforming non-trivially under the bulk and Standard Model gauge groups and leading to a neutralino LSP as dark matter candidate. The Higgsino mass μ and soft Higgs-bilinear B μ term could be generated at the same order of magnitude as the other soft terms by effective supergravity couplings as in the Giudice–Masiero mechanism.

Domaines: Physique [physics]

Ignatios Antoniadis, Karim Benakli, Mariano Quiros. Sequestered gravity in gauge mediation. European Physical Journal C: Particles and Fields, 2016, 76 (7), pp.363. ⟨10.1140/epjc/s10052-016-4192-8⟩. ⟨hal-01347088⟩