Goldstini Can Give the Higgs a Boost

Details Goldstini Can Give the Higgs a Boost Goldstini Can Give the Higgs a Boost

2011-03-08

arxiv.org/abs/1103.1631v2

JHEP 1107:060,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 12 figures; v2: title change, clarifications added, version to appear in JHEP

Scientific paper

10.1007/JHEP07(2011)060

Supersymmetric collider phenomenology depends crucially on whether the lightest observable-sector supersymmetric particle (LOSP) decays, and if so, what the LOSP decay products are. For instance, in SUSY models where the gravitino is lighter than the LOSP, the LOSP decays to its superpartner and a longitudinal gravitino via supercurrent couplings. In this paper, we show that LOSP decays can be substantially modified when there are multiple sectors that break supersymmetry, where in addition to the gravitino there are light uneaten goldstini. As a particularly striking example, a bino-like LOSP can have a near 100% branching fraction to a higgs boson and an uneaten goldstino, even if the LOSP has negligible higgsino fraction. This occurs because the uneaten goldstino is unconstrained by the supercurrent, allowing additional operators to mediate LOSP decay. These operators can be enhanced in the presence of an R symmetry, leading to copious boosted higgs production in SUSY cascade decays.

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