Dirac gauginos in low scale supersymmetry breaking

Mark D. Goodsell (1) , Pantelis Tziveloglou (2)

1 LPTHE - Laboratoire de Physique Théorique et Hautes Energies
2 Theoretische Natuurkunde and IIHE, Vrije Universiteit Brussel

It has been claimed that Dirac gaugino masses are necessary for realistic models of low-scale super-symmetry breaking, and yet very little attention has been paid to the phenomenology of a light gravitino when gauginos have Dirac masses. We begin to address this deficit by investigating the couplings and phenomenology of the gravitino in the effective Lagrangian approach. We pay particular attention to the phenomenology of the scalar octets, where new decay channels open up. This leads us to propose a new simplified effective scenario including only light gluinos, sgluons and gravitinos, allowing the squarks to be heavy – with the possible exception of the third generation. Finally, we comment on the application of our results to Fake Split Supersymmetry.

Domaines: Physique [physics]

Mark D. Goodsell, Pantelis Tziveloglou. Dirac gauginos in low scale supersymmetry breaking. Nuclear Physics B, 2014, 889, pp.650-675. ⟨10.1016/j.nuclphysb.2014.10.020⟩. ⟨hal-01332500⟩