TL;DR
This paper reviews how the 750 GeV diphoton excess observed at the LHC could be explained within supersymmetric models, especially the NMSSM, by a Higgs decaying into light pseudo-scalars that mimic single photons.
Contribution
It provides a detailed review of SUSY-based explanations for the 750 GeV excess, focusing on a specific NMSSM scenario involving Higgs decays to pseudo-scalars.
Findings
The NMSSM scenario can produce the observed diphoton signal.
Pseudo-scalar decays can mimic single photons due to collimation.
The proposed model aligns with experimental observations.
Abstract
The LHC experiments ATLAS and CMS have reported an excess in the diphoton spectrum at \sim 750 GeV. At the same time the motivation for Supersymmetry (SUSY) remains unbowed. Consequently, we review briefly the proposals to explain this excess in SUSY, focusing on "pure" (N)MSSM solutions. We then review in more detail a proposal to realize this excess within the NMSSM. In this particular scenario a Higgs boson with mass around 750 GeV decays to two light pseudo-scalar Higgs bosons. Via mixing with the pion these pseudo-scalars decay into a pair of highly collimated photons, which are identified as one photon, thus resulting in the observed signal.
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