Explaining The XENON1T Excess With Light Goldstini Dark Matter

Understand

In the scenario with a multiplicity of sectors which independently break supersymmetry, multiplicity of goldstini are predicted.

• We propose a new interpretation of the electron recoil excess at 2-7 keV observed in the XENON1T experiment with very long-lived goldstini DM elastically scattering off the electrons.
• The goldstini DM can be boosted by the late-decay of the other nearly degenerate (long-lived) goldstini DM, with their tiny mass difference being converted into kinetic energy of the lighter goldstini DM and neutrinos.
• We show that viable parameter space can be found which can explain the excess of electron recoil events around 2-3 keV recently reported by the XENON1T experiment.