Diphoton resonance at 750 GeV in the broken MRSSM

TL;DR

This paper proposes that a scalar in the broken MRSSM can explain the 750 GeV diphoton resonance observed at the LHC, aligning with the absence of signals in other channels.

Contribution

It demonstrates that a scalar in the broken MRSSM can account for the 750 GeV diphoton excess and predicts testable signals in future LHC runs.

Findings

Scalar in broken MRSSM explains the 750 GeV resonance

Model aligns with non-observation in other channels

Proposes tests for upcoming LHC data

Abstract

Non-observation of superpartners of the Standard Model particles at the early runs of the LHC provide strong motivation for an $R$-symmetric minimal supersymmetric Standard Model, or MRSSM. This model also comes with a pair of extra scalars which couple only to superpartners at the tree level. We demonstrate that in the limit when the $U(1)_R$ symmetry is broken, one of these scalars develops all the properties necessary to explain the 750 GeV diphoton resonance recently observed at the LHC, as well as the non-observation of associated signals in other channels. Some confirmatory tests in the upcoming LHC runs are proposed.