A Definitive Signal of Multiple Supersymmetry Breaking

Abstract

If the lightest observable-sector supersymmetric particle (LOSP) is charged and long-lived, then it may be possible to indirectly measure the Planck mass at the LHC and provide a spectacular confirmation of supergravity as a symmetry of nature. Unfortunately, this proposal is only feasible if the gravitino is heavy enough to be measured at colliders, and this condition is in direct conflict with constraints from big bang nucleosynthesis (BBN). In this work, we show that the BBN bound can be naturally evaded in the presence of multiple sectors which independently break supersymmetry, since there is a new decay channel of the LOSP to a goldstino. Certain regions of parameter space allow for a direct measurement of LOSP decays into both the goldstino and the gravitino at the LHC. If the goldstino/gravitino mass ratio is measured to be 2, as suggested by theory, then this would provide dramatic verification of the existence of multiple supersymmetry breaking and sequestering. A variety of consistent cosmological scenarios are obtained within this framework. In particular, if an R symmetry is imposed, then the gauge-gaugino-goldstino interaction vertices can be forbidden. In this case, there is no bound on the reheating temperature from goldstino overproduction, and thermal leptogenesis can be accommodated consistently with gravitino dark matter.

10 pages, 5 figures, title changed to match the version published in JHEP

References in corpus (8)

• Big-Bang Nucleosynthesis and Gravitino
• Thermal production of gravitinos
• Goldstini
• The Relic Abundance of Long-lived Heavy Colored Particles
• The number density of a charged relic
• Supersymmetry with a Chargino NLSP and Gravitino LSP
• Gravitino Dark Matter Scenarios with Massive Metastable Charged Sparticles at the LHC
• Measuring lifetimes of long-lived charged massive particles stopped in LHC detectors

Cited by in corpus (31)

• Origins of Hidden Sector Dark Matter I: Cosmology
• Hunting Dark Matter Gamma-Ray Lines with the Fermi LAT
• Flavor Mediation Delivers Natural SUSY
• Gravitino Freeze-In
• Pseudo-Goldstini in Field Theory
• Leptogenesis, Gravitino Dark Matter and Entropy Production
• The Goldstini Variations
• Origins of Hidden Sector Dark Matter II: Collider Physics
• The Spectrum of Goldstini and Modulini
• The Last Gasp of Dark Matter Effective Theory
• Visible Supersymmetry Breaking and an Invisible Higgs
• Goldstini Can Give the Higgs a Boost
• Baryogenesis with Higher Dimension Operators
• Goldstini as the decaying dark matter
• Stimulated Supersymmetry Breaking
• Higgs decay to goldstini and its observability at the LHC
• Unstable Gravitino Dark Matter - Prospects for Indirect and Direct Detection
• Supersymmetry in the shadow of photini
• Collider signatures of goldstini in gauge mediation
• Pseudo-goldstino and electroweakinos via VBF processes at LHC
• Supergravity Computations without Gravity Complications
• Pseudo-goldstino and electroweak gauginos at the LHC
• The B-L Phase Transition: Implications for Cosmology and Neutrinos
• Z-peaked excess in goldstini scenarios
• An explicit calculation of pseudo-goldstino mass at the leading three-loop level
• Dynamical Matter-Parity Breaking and Gravitino Dark Matter
• Multiphoton signatures of goldstini at the LHC
• Diluting SUSY flavour problem on the Landscape
• Enhanced Higgs pair production from higgsino decay at the HL-LHC
• Multilepton and multiphoton signatures of supersymmetry at the LHC
• Aspects of astrophysical particle production and beyond the Standard Model phenomenology