Diphoton resonance at 750 GeV in the brokenR-symmetric MSSM

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Abstract

Nonobservation of superpartners of the Standard Model particles at the early runs of the LHC provide strong motivation for introducing an $R$-symmetric minimal supersymmetric Standard Model. This model also comes with a pair of extra scalars which couple only to superpartners at the tree level. We demonstrate that in the case when the $U(1{)}_{R}$ symmetry is mildly 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 nonobservation of associated signals in other channels. Some confirmatory tests in the upcoming LHC runs are proposed.

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