Goldstini Can Give the Higgs a Boost
arXiv:1103.1631 · doi:10.1007/JHEP07(2011)060
Abstract
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.
30 pages, 12 figures; v2: title change, clarifications added, version to appear in JHEP
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- Visible Supersymmetry Breaking and an Invisible Higgs
- Higgs decay to goldstini and its observability at the LHC
- Collider signatures of goldstini in gauge mediation
- Pseudo-goldstino and electroweakinos via VBF processes at LHC
- Excessive Higgs pair production with little MET from squarks and gluinos in the NMSSM
- Pseudo-goldstino and electroweak gauginos at the LHC
- Z-peaked excess in goldstini scenarios
- An explicit calculation of pseudo-goldstino mass at the leading three-loop level
- Multiphoton signatures of goldstini at the LHC
- Enhanced Higgs pair production from higgsino decay at the HL-LHC
- Aspects of astrophysical particle production and beyond the Standard Model phenomenology