Abstract
The CP -even and CP -odd scalar states of the two-Higgs-doublet model (THDM) and the Higgs sector of theMinimal Supersymmetric StandardModel (MSSM), with properties which could lead to the 750 GeV excess in the γγ invariant mass distribution, are studied. It is shown that THDM and MSSM are viable in explaining the observed excess without additional assumptions only when the alignment and decoupling limits break down. If the origin of the excess is not in a Higgs sector, regions of the MSSM parameter space are separated where the lightest CP -even Higgs boson is identical to the Standard Model scalar.
Highlights
Most significant deviation in the diphoton invariant mass spectrum at M(γγ) ∼ 750 GeV observed b√y ATLAS and CMS (2.6 fb−1) collaborations in pp collisions at s = 13 TeV [1] deserves an interpretation in models with an extended Higgs sector
We focus should have already been observed at the first LHC here on the more likely possibility of spin zero
Supersymmetric possibilities include such interpretations of the diphoton resonance as a sgoldstino [8] or a Higgs boson in the Next-toMinimal SSM (NMSSM) [9] in the following we analyse a possibility of CP-even and/or CP-odd Higgs boson of the two-Higgs-doublet model (THDM) contributing to the Φ signal
Summary
Most significant deviation in the diphoton invariant mass spectrum at M(γγ) ∼ 750 GeV observed b√y ATLAS (integrated luminosity 3.2 fb−1) and CMS (2.6 fb−1) collaborations in pp collisions at s = 13 TeV [1] deserves an interpretation in models with an extended Higgs sector. In an extended scalar sector different possibilities exist for the Φ particle, which can be either from an isospin singlet state, or from an isospin doublet. Supersymmetric possibilities include such interpretations of the diphoton resonance as a sgoldstino [8] or a Higgs boson in the Next-toMinimal SSM (NMSSM) [9] in the following we analyse a possibility of CP-even and/or CP-odd Higgs boson of the THDM contributing to the Φ signal
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